Perhaps you should try some spelling variations:
"integrating quantitative methods" » "integrating qualitative methods", "generations quantitative methods"
"integration quantitative methods" » "integrating qualitative methods", "generations quantitative methods", "integration initiatives methods"
"integration qualitative methods" » "integrating qualitative methods"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("integration qualitative methods") OR ("integrating quantitative methods"))) or ("integration quantitative methods"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("integration qualitative methods") OR ("integrating quantitative methods"))) OR ("integration quantitative methods")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"integration qualitative methods\") OR (\"integrating quantitative methods\"))) or (\"integration quantitative methods\"))".
• Removing quotes may allow a broader search: (((( integration qualitative methods ) OR ( integrating quantitative methods ))) or ( integration quantitative methods )).
• Adding a wildcard symbol may retrieve word variants: (((("integration qualitative methods") OR ("integrating quantitative methods"))) or ("integration quantitative methods"))*.