CTRL-F opens or focuses the search interface. Pressing CTRL-F several times toggles search mode. When searching incrementally, pressing CTRL-F makes the program search for the next occurence of the search string.
CTRL-SHIFT-F opens or focuses the search interface, and selects incremental search. When searching incrementally, CTRL-SHIFT-F also finds the next occurence of the search string.
author = miller
Both the field specification and the search term support regular expressions. If the search term contains spaces, enclose it in quotes. Do not use spaces in the field specification! E.g. to search for entries about image processing, type:
title|keywords = "image processing"
You can use "and", "or", "not", and braces as intuitively expected:
(author = miller or title|keywords = "image processing") and not author = brown
The "=" sign is actually a shorthand for "contains". Searching for an exact match is possible using "matches" or "==". Using "!=" tests if the search term is not contained in the field (equivalent to "not ... contains ..."). The selection of field types to search (required, optional, all) is always overruled by the field specification in the search expression. To search for entries of a certain type, a pseudo field called "entrytype" is available:
entrytype = thesis
This finds entries whose type (as displayed in the "Entrytype" column) contains the word "thesis" (which would be "phdthesis" and "mastersthesis"). Another pseudo field "bibtexkey" allows to search for citation keys, e.g.
bibtexkey = miller2005