Perhaps you should try some spelling variations:
development services » development process, development africa
sustainable resource » sustainable future
development agencies » development policies, government agencies
aqaba environmental » global environmental, trade environmental, urban environmental
sustainable rural » sustainable urban, sustainable use
central aqaba » central asia, central java
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 aqaba environmental and socially ((sustainable rural) OR (sustainable resource)) ((development services) or (development agencies)).~.
• If you are trying to use Boolean operators, they must be ALL CAPS: world ((bank technical) OR (a technical)) paper. europe AND central aqaba environmental AND socially ((sustainable rural) OR (sustainable resource)) ((development services) OR (development agencies))..
• The words AND, OR and NOT may confuse the search; try adding quotes: "world ((bank technical) or (a technical)) paper. europe and central aqaba environmental and socially ((sustainable rural) OR (sustainable resource)) ((development services) or (development agencies)).".
• Adding a wildcard symbol may retrieve word variants: world ((bank technical) or (a technical)) paper. europe and central aqaba environmental and socially ((sustainable rural) OR (sustainable resource)) ((development services) or (development agencies)).*.