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 2006" » "multi factors research : july 2006", "multi sector research : july 2006", "multi actors research : july 2006", "multi actor research : july 2006", "_ multifactor research : july 2006", "multi factor research : july 2008", "multi factor research : july 2007", "multi factor research : july 2013"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"multi factor research : july 2006\") OR (\"multi faceted research : july 2009\"))~".
• Removing quotes may allow a broader search: (( multi factor research : july 2006 ) OR ( multi faceted research : july 2009 ))~.
• Adding a wildcard symbol may retrieve word variants: (("multi factor research : july 2006") OR ("multi faceted research : july 2009"))*.