Field searching is useful when you believe that limiting your search to a particular field will produce more accurate search results.
If document fields have been defined for the collection you are searching, you can use the CONTAINS operator to search for terms in fields. The CONTAINS operator accepts words, phrases, and wildcards, but it does not accept nonalphanumeric characters like hyphens. For example, if you are looking for information on the Grammy awards, you can issue this query to search for grammy in the title field to find pages have the Grammy awards as their primary focus.
Field searches require an exact match of the query term to appear in the results list. In contrast, zone searches can find pages containing stemmed variations of the search term if it is not enclosed in double quotation marks. In this example, the matching pages contain only Grammy, not Grammys.