Case is ignored in searches. 'HP' finds 'hp' or the other way around.
Do not put periods after letters in your search string. For example: N.W.T., instead use NWT.
The following characters cannot be part of the seach string: ( ) [ ] ? ; ' \ + $ ^ *
If you are searching for an acronym/abbreviation with the ' w/ ' (with something) symbol attached, repeat your search without it.
If you are searching for an acronym/abbreviation with a special character (/, -, ., &, etc.) like this A/V or A-V or A.V. or A&V, repeat your search with the special character(s) omitted.
If you are searching for an acronym/abbreviation that has a space or dashes in it, try it with the space/dashes first. If no results try each part separately.
The main search at the top of this page utilizes an 'exact' match to narrow results. Try using the advanced search options to widen your results.