Perhaps you should try some spelling variations:
"open resource software" » "open resources software", "open source software", "open opensource software", "when resources software"
"ocean resource software" » "ocean resources software", "ocean source software", "ocean opensource software", "human resource software"

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