Perhaps you should try some spelling variations:
"der software development countries problems." » "der software developing countries problems.", "der software developed countries problems.", "der software development congresses problems.", "adept software development countries problems.", "free software development countries problems.", "a software development countries problems."
"web mine development policies from." » "web mine development policy from.", "web mine development projects from.", "web sme development policies from.", "web trade development policies from.", "web business development policies from.", "web money development policies from.", "webb mike development policies from.", "web site development policies from."

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: (("der software development countries problems.") OR ("web mine development policies from."))~.
• Removing quotes may allow a broader search: (( der software development countries problems. ) or ( web mine development policies from. ))~.
• Adding a wildcard symbol may retrieve word variants: (("der software development countries problems.") or ("web mine development policies from."))*.