Perhaps you should try some spelling variations:
"multi class research : july 2007" » "multi crops research : july 2007", "multi classroom research : july 2007", "multiclass _ research : july 2007", "multi class research : july 2008", "multi class research : july 2013", "multi class research : july 2012"
"bali climate research : july 2007" » "mali climate research : july 2007", "daily climate research : july 2007", "early climate research : july 2007", "bali climate research : july 2008", "bali climate research : july 2013", "bali climate research : july 2012"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("multi class research : july 2007") OR ("bali climate research : july 2007"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"multi class research : july 2007\") OR (\"bali climate research : july 2007\"))".
• Removing quotes may allow a broader search: (( multi class research : july 2007 ) OR ( bali climate research : july 2007 )).
• Adding a wildcard symbol may retrieve word variants: (("multi class research : july 2007") OR ("bali climate research : july 2007"))*.