Perhaps you should try some spelling variations:
"ocean resources software" » "ocean source software", "ocean outsourced software", "human resources software"
"open resource software" » "open source software", "open opensource software", "open resonance software", "open resources software", "when resources software"
"ocean resource software" » "ocean source software", "ocean opensource software", "ocean resonance software"
"human resource software" » "human source software", "human opensource software", "human resonance software"
"ocean measures software" » "ocean features software", "mean measures software", "oman measures software"

Try widening your search to All Fields.

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 software") OR ((((("ocean resource software") OR ("human resource software"))) OR ((("ocean resources software") OR ("ocean measures software")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"open resource software\") or (((((\"ocean resource software\") OR (\"human resource software\"))) or (((\"ocean resources software\") or (\"ocean measures software\"))))))".
• Removing quotes may allow a broader search: (( open resource software ) or ((((( ocean resource software ) OR ( human resource software ))) or ((( ocean resources software ) or ( ocean measures software )))))).
• Adding a wildcard symbol may retrieve word variants: (("open resource software") or ((((("ocean resource software") OR ("human resource software"))) or ((("ocean resources software") or ("ocean measures software"))))))*.