Search limits for file extensions and sizes, synonym groups, and picklists.
Search Limits Search limits for document records and synonym groups.
Search Limits for Synonyms With synonym groups, sets of words or phrases are treated equally in searches. A search for a term in a synonym group returns results for all terms in the group. An org can create up to 10,000 synonym groups.
Search Limits for Picklists When sorting search results for a particular object, you can’t click on column headings for multi-select picklist fields because you can’t sort the multi-select picklist field type.