Perhaps you should try some spelling variations:
"bounded theories" » "grounded theories", "bounded queries", "grounded theorie"
"blended theory" » "extended theory", "blending theory", "blended query"
"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 theories") OR ("blended theory")))).
• Removing quotes may allow a broader search: (( grounded theory ) or ((( bounded theories ) or ( blended theory )))).
• Adding a wildcard symbol may retrieve word variants: (("grounded theory") or ((("bounded theories") or ("blended theory"))))*.