Guidelines for using the search location field:
By default, search patterns are matched to the beginnings of the themes. Patterns that occur elsewhere in the theme may also be searched. If you select the option anywhere in theme, patterns will be found regardless of where they occur in the theme.
The search pattern is a series of pitches, G G G E- F. Using the default option beginning of theme only, you will find the following theme:
After selecting the option anywhere in theme you will find this theme again, and another:
The pattern occurs in measures 3 and 4.