About Searching from the Help Center
The Search box is always accessible from wherever you are in the Help. Click 
to open the Search page. You can set the search filters to narrow or broaden your search.
to open the Search page. You can set the search filters to narrow or broaden your search.The following search rules apply when searching the Help:
• Boolean—All search words and phrases have an implicit AND.
• Wildcard Search—All search words have an implicit wildcard. For example, if you type extr, your search results will include any string that starts with extr, such as extrude and extra.
• Word Search—For example, a search for round feature finds all Help topics containing both round and feature. The terms do not have to be next to each other.
• Phrase Search—To find an exact phrase, enclose the phrase in quotations. For example, search for “reference model” to find all Help topics containing the exact phrase reference model.