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