Therefore, searches with lots of matches will take a long time to show any results. Search Type Simple Articles which contain all the words listed in the search specification are found. The curly braces can be used to group expressions. In a complex search, the index is first searched for candidate files and the actual files are searched to verify matches. Obviously, this search is somewhat slower than a simple search.
Many additional features are available in the search using special non-alphanumeric characters.
A space is truly a space in a complex search. Only Searches only article headers. It is probably best to do a Header Only search first when search for very common patterns. For the most part, a Header Only search is effectively a search on the title. Header and Body Searches both the header and body of articles for given pattern.