Perhaps you should try some spelling variations:
asia environmentally » _ environmentally, sea environmental, aqaba environmental
development process » development projects, development programs, development policies
technical experts » technical expertise
sustainable rural » sustainable urban, sustainable use, sustainable resource
rural development » social development
technical paper » technical report
world a » world _

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

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