Perhaps you should try some spelling variations:
development complex » developments complexes, development computer, development company
water development » career development, sector development
trade development » software development
complex problems » complex projects
der water » der vater, under water, over water
web trade » web made

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

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