Perhaps you should try some spelling variations:
resources software » source software, outsourced software, measures software
resource software » source software, opensource software, resonance software
open resource » open resources, ocean resource, open sources

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((open resource) OR (open source)) software ) OR ( human ((resource software) OR (resources software)) ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((open resource) or (open source)) software ) or ( human ((resource software) OR (resources software)) ))*".