Perhaps you should try some spelling variations:
"multi faceted research : july 2009" » "multi faceted search : july 2009", "multi focused research : july 2009", "multi facetted search : july 2009", "multi faceted research : july 2008", "multi faceted research : july 2007", "multi faceted research : july 2019"
"multi factor research : july 2011" » "multi factors research : july 2011", "multi sector research : july 2011", "multi actors research : july 2011", "multi actor research : july 2011", "_ multifactor research : july 2011", "multi factor research : july 2013", "multi factor research : july 2012", "multi factor research : july 2015"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("multi factor research : july 2011") or ("multi faceted research : july 2009"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("multi factor research : july 2011") OR ("multi faceted research : july 2009")).
• Removing quotes may allow a broader search: (( multi factor research : july 2011 ) or ( multi faceted research : july 2009 )).
• Adding a wildcard symbol may retrieve word variants: (("multi factor research : july 2011") or ("multi faceted research : july 2009"))*.