There are many ways that you can narrow down your search results by using advanced search operators or syntax. The following shows some examples of the search syntax. More details can be found here: http://lucene.apache.org/java/2_9_1/queryparsersyntax.html
annual – will find all results containing the word annual. With this, and all of the searches below, it will also find other words that use the same root. Like annuals, annualized, annualization, etc.
annual conference – will find all results containing the word annual or conference. If both words are there it will rank higher
annual OR conference – will find all results containing the word annual or conference. This is the same as not putting in the OR since OR is the default
annual AND conference – will return results that have both the word annual and the word conference in them
“annual conference” – will find all results containing the phrase annual conference (both words used together)
annual +conference – will find all results containing the word conference. If annual is also there it will rank higher. The + at the front of the word means that that word is required.
annual -conference – will find all results containing the word annual as long as the word conference is not in the result. The - at the front of the word means that that word must not be there.
(annual OR regional) AND conference – will find results that contain the word conference. If annual or regional are also there, the result will rank higher
te?t – will return like test and text. The ? is a single character wildcard. Note: it cannot be used as the first character
te*t – will return like test, text, and tee-shirt. The * matches 0 or more characters. Note: it cannot be used as the first character
test~ - will return like test, text, rest, best. The ~ character performs a “fuzzy” search on the word finding words that are similar