Perhaps you should try some spelling variations:
"the computer service" » "the computing service", "the computing services", "the computer science"
"the complex service" » "the complex services", "the compute service", "the component service"
"the complete series" » "the complete sets"

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 complete series") OR ((("the complex service") OR ("the computer service")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"the complete series\") or (((\"the complex service\") OR (\"the computer service\"))))".
• Removing quotes may allow a broader search: (( the complete series ) or ((( the complex service ) OR ( the computer service )))).
• Adding a wildcard symbol may retrieve word variants: (("the complete series") or ((("the complex service") OR ("the computer service"))))*.