Perhaps you should try some spelling variations:
"bounded theory" » "blended theory", "bounded theories", "grounded theory6"
"bounds theory" » "bands theory", "brands theory", "boundary theory"
"funds theory" » "fluids theory", "minds theory", "foods theory"
"grounded theory" » "ground theory", "founded 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 ("bounded theory"))) OR ((("bounds theory") OR ("funds theory")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"grounded theory\") or (\"bounded theory\"))) or (((\"bounds theory\") OR (\"funds theory\"))))".
• Removing quotes may allow a broader search: (((( grounded theory ) or ( bounded theory ))) or ((( bounds theory ) OR ( funds theory )))).
• Adding a wildcard symbol may retrieve word variants: (((("grounded theory") or ("bounded theory"))) or ((("bounds theory") OR ("funds theory"))))*.