Perhaps you should try some spelling variations:
"der daten development complex problems." » "der daten developments complexes problems.", "der daten development computer problems.", "der daten development company problems.", "der patent development complex problems.", "der staten development complex problems.", "der water development complex problems.", "der daten development complex projects."
"web mine development impact people's." » "web sme development impact people's.", "web trade development impact people's.", "web business development impact people's.", "web money development impact people's.", "webb mike development impact people's.", "web site development impact people's."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("der daten development complex problems.") or ("web mine development impact people's."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("der daten development complex problems.") OR ("web mine development impact people's.")).
• Removing quotes may allow a broader search: (( der daten development complex problems. ) or ( web mine development impact people's. )).
• Adding a wildcard symbol may retrieve word variants: (("der daten development complex problems.") or ("web mine development impact people's."))*.