Perhaps you should try some spelling variations:
"coupled theory" » "coupling theory", "coupled thermo", "coupled memory"
"founded where" » "found where", "founded thereon", "founded charge"
"grounded theory" » "ground theory", "bounded theory"

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: (("grounded theory") OR ((("founded where") OR ("coupled theory")))).
• Removing quotes may allow a broader search: (( grounded theory ) or ((( founded where ) or ( coupled theory )))).
• Adding a wildcard symbol may retrieve word variants: (("grounded theory") or ((("founded where") or ("coupled theory"))))*.