Perhaps you should try some spelling variations:
"open resources software" » "open source software", "open outsourced software", "ocean resources software", "open sources software", "own resources software"
"open measures software" » "own measures software", "upon measures software", "when measures software"

Try widening your search to All Fields.

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 resources software\") OR (\"open measures software\"))".
• Removing quotes may allow a broader search: (( open resources software ) OR ( open measures software )).
• Adding a wildcard symbol may retrieve word variants: (("open resources software") OR ("open measures software"))*.