This is a list of some of the books published since 2006 on enterprise search, information retrieval and text mining.  It was revised in December 2016. Suggestions for additional titles would be appreciated.

The eight titles in red font are those which in my opinion represent the core library for a search team to have access to.

Among publishers with a substantial commitment to books on information retrieval, enterprise search and related topics are Morgan and Claypool, Now Publishing, O’Reilly and Springer. Only a selection of the books that may have a relevance to enterprise search are included in this list.

Ambient Findability
Peter Morville. 2005  O’Reilly Publishing

The Answer Machine
Susan Feldman. 2012  Morgan and Claypool

Book of Search.
Kjetil Halvorsen et al  2006  Fast Search and Transfer (No longer available)

Designing Search. UX Strategies for eCommerce Success.
Greg Nudelman, 2011. Wiley Publishing

Designing the Search Experience
Tony Russell-Rose and Tyler Tate, 2012 . Morgan Kaufmann

Deep Text 
Tom Reamy 2016  Information Today (Review)

Economic Trends in Enterprise Search Solutions.
Pierre-Jean Benghozi and Cécile Chamaret. 2010. Institute for Prospective Technological Studies, Joint Research Centre, European Commission

Rafał Kuć and Marek Rogoziński 2013. Packt Publishing

ElasticSearch. The Definitive Guide
Clinton Gormley and Zachary Tong 2014. O’Reilly

Enterprise Search
Martin White, 2015. O’Reilly Media

Expertise Retrieval.
K. Balog, Y. Fang, M. de Rijke, P. Serdyukov and L. Si 2012. Now Publishing

Faceted Search.
Daniel Tunkelang. 2010. Morgan and Claypool Publishers

Feature Centric View of Information Retrieval.
Donald Metzler. 2011. Springer

Federated Search
M. Shokouhi and L. Si. 2011. Now Publishers

Fundamentals of Predictive Text Mining.
Sholom M. Weiss, Nitin Indurkhya and Tong Zhang. 2010. Springer.

Foundations of Large-Scale Multimedia Information Management and Retrieval.
Edward Y. Chang. 2011. Springer

Information – a Very Short Introduction
Luciano Floridi 2010. Oxford University Press

Information Retrieval; Algorithms and Heuristics.
2nd Edition. David A. Grossman and Ophir Frieder. 2004. Springer

Information Retrieval Evaluation.
Donna Harman. 2011. Morgan and Claypool Publishers

Information Retrieval: Implementing and Evaluating Search Engines.
Stefan Büttcher, Charles L. A. Clarke and Gordon V. Cormack. 2010. Massachusetts Institute of Technology.

Information Retrieval: Searching in the 21st Century.
Ayse Goker and John Davies (Editors). 2009. Wiley-Blackwell

Innovations in Information Retrieval: Perspectives for theory and practice.
Allen Foster and Pauline Rafferty (Editors). 2011. Facet Publishing

Interactions with Search Systems
Ryen White 2016. Cambridge University Press (Review)

Interactive Information Seeking, Behaviour and Retrieval.
Ian Ruthven and Diane Kelly (Editors). 2011. Facet Publishing

Introduction to Information Behaviour
Nigel Ford 2015. Facet  (Review)

Introduction to Information Retrieval.
Christopher D. Manning, Prabhakar Raghavan and Hinrich Schutze. 2008. Cambridge University Press.

Introduction to Modern Information Retrieval.
G. G. Chowdhury. 2010. Facet Publishing

Learning to Rank for Information Retrieval.
T.-Y. Liu. 2009. Now Publishers

Lucene in Action.
Michael McCandless, Erik Hatcher and Otis Gospodnetic. 2010. Manning Publications

Making Search Work.
Martin White. 2007. Facet Publishing

Multilingual Information Retrieval: From Research To Practice.
Carol Peters, Martin Braschler and Paul Clough. 2012. Springer

Multimedia Information Retrieval.
Stefan Rüger. 2009. Morgan and Claypool Publishers

Modern Information Retrieval: The Concepts and Technology Behind Search.
Ricardo Baeza-Yates and Berthier Ribeiro-Neto. 2nd Edition. 2011. Addison Wesley

Professional Microsoft Search.
Mark Bennett, Jeff Fried, Miles Kehoe and Natalya Voskresenskaya. 2011. Wrox  (Currently not in print)

Relevant Search
Doug Turnbull and John Berryman. 2015. Manning Publications. (Review)

Search Analytics For Your Site.
Louis Rosenfeld. 2011. Rosenfeld Media

Search-Based Applications: At the Confluence of Search and Database Technologies.
Gregory Grefenstette and Laura Wilber. 2010. Morgan and Claypool Publishers

Search Engines:  Information Retrieval in Practice.
W. Bruce Croft, Donald Metzler and Trevor Strohman. 2010. Addison Wesley.

Search Patterns.
Peter Morville and Jefferey Callender. 2010. O’Reilly Publishing

Search User Interfaces.
Marti A. Hearst. 2009. Cambridge University Press

Search User Interface Design
Max Wilson. 2012. Morgan and Claypool

Semantic Software Technologies.
Lynda Moulton. 2010.  Gilbane Group

SharePoint 2013 Enterprise Search Walkthrough Guide.
Steve Mann 2013. Stevethemanmann

Solr in Action.
Trey Grainger and Timothy Potter 2014. Manning Publications

Teaching and Learning in Information Retrieval.
E. Efthimiadis, J.M.Fernández-Lunam J.F.Huete and A. MacFarlane. 2011. Springer

Test Collection Based Evaluation of Information Retrieval
Mark Sanderson. 2010. Now Publishers

Text Data Management and Analysis
Chengxiang Zhai and Sean Massung. 2016. ACM Books (Review)

Text Mining: Applications and Theory.
Michael W. Berry and Jacob Kogan (Editors) 2010. Wiley-Blackwell

The Inquiring Organisation
Chun Wei Choo.  2015. Oxford University Press.  (Review)

Understanding Information Retrieval Systems: Management, Types, and Standards.
Marcia J. Bates (editor) . 2011. Auerbach Publications

Working with Microsoft FAST Search Server 2010 for SharePoint
Mikael Svenson, Marcus Johansson and Robert Piddocke . 2012. Microsoft Press