Perhaps you should try some spelling variations:
"The compass varies" » "The compass bearings"
"The compass series" » "The comparison series", "The compass exercises", "The compass bearings"
"the complex series" » "the complex services", "the complex queries", "the complete series"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("The compass series") OR ("The compass varies"))) OR ("the complex series")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"The compass series\") OR (\"The compass varies\"))) or (\"the complex series\"))".
• Removing quotes may allow a broader search: (((( The compass series ) OR ( The compass varies ))) or ( the complex series )).
• Adding a wildcard symbol may retrieve word variants: (((("The compass series") OR ("The compass varies"))) or ("the complex series"))*.