Perhaps you should try some spelling variations:
communications der » communications en, communications tec, communications power
urban development » human development
development towns » development tools, development towards, development trends
technologies 4 » technologies _
4 information » 2 information, 1 information
information 3 » information 2
towns africa » works africa
der urban » der urbane, der urbanen, under urban
2 10 » 2 1, 9 10, 7 10
_ 10 » _ 1

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: "technologies 4 information 3 ((2 10) OR (_ 10)) communications der urban development towns africa.~".
• Adding a wildcard symbol may retrieve word variants: technologies 4 information 3 ((2 10) OR (_ 10)) communications der urban development towns africa.*.