Perhaps you should try some spelling variations:
"grounded theory8.1" » "grounded theory", "grounded theory6", "grounded theorie"
"founded theory" » "grounded theory", "grounded theory6", "founding theory"
"bounded theory" » "grounded theory", "blended theory", "bounds 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: (((("founded theory") OR ("grounded theory8.1"))) OR ("bounded theory"))*.
• Removing quotes may allow a broader search: (((( founded theory ) or ( grounded theory8.1 ))) or ( bounded theory ))*.