Perhaps you should try some spelling variations:
asia environmentally » _ environmentally
aqaba environmental » global environmental, trade environmental, urban environmental
development series » development services, development agencies, development africa
sea environmental » weak environmental, state environmental, sites environmental
key environmental » _ environmental, 2 environmental
sustainable rural » sustainable urban, sustainable use, sustainable resource
rural development » social development
a technical » _ technical, 2 technical

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

• Performing a fuzzy search may retrieve terms with similar spellings: world ((bank technical) or (a technical)) paper. europe and central ((((asia environmentally) or (((sea environmental) OR (key environmental))))) or (aqaba environmental)) and socially sustainable rural development series.~.
• If you are trying to use Boolean operators, they must be ALL CAPS: world ((bank technical) OR (a technical)) paper. europe AND central ((((asia environmentally) OR (((sea environmental) OR (key environmental))))) OR (aqaba environmental)) AND socially sustainable rural development series..
• The words AND, OR and NOT may confuse the search; try adding quotes: "world ((bank technical) or (a technical)) paper. europe and central ((((asia environmentally) or (((sea environmental) OR (key environmental))))) or (aqaba environmental)) and socially sustainable rural development series.".
• Adding a wildcard symbol may retrieve word variants: world ((bank technical) or (a technical)) paper. europe and central ((((asia environmentally) or (((sea environmental) OR (key environmental))))) or (aqaba environmental)) and socially sustainable rural development series.*.