Perhaps you should try some spelling variations:
"open resource software" » "open resources software" (Expand Search)
"open rerereresourcessssssssssssssssssssssssssssssssss software" » "open rerereresourcesssssssssssssssssssssssssssssssssss software" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("open resource software") OR ("open rerereresourcessssssssssssssssssssssssssssssssss software"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"open resource software\") OR (\"open rerereresourcessssssssssssssssssssssssssssssssss software\"))*".
• Removing quotes may allow a broader search: (( open resource software ) OR ( open rerereresourcessssssssssssssssssssssssssssssssss software ))*.