Perhaps you should try some spelling variations:
resource software » resources software, source software, opensource software
open resources » ocean resources, open sources, own resources
ocean resource » ocean resources, human resource
open resource » open source, open sources, min resource

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: "\"((\\"((open resource) OR (open resources)) software\\") or (\\"ocean resource software\\"))*\"".
• Removing quotes may allow a broader search: (( ((open resource) OR (open resources)) software ) or ( ocean resource software ))*.