Perhaps you should try some spelling variations:
development references » development services
references customs » references custom, references custody, references cases
scale development » estate development, trade development, sme development
female employment » self employment, wage employment, farm employment
growth some » growth become, growth income, growth since

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( scale development references customs. ) or ( female employment growth some. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( scale development references customs. ) OR ( female employment growth some. )).
• Adding a wildcard symbol may retrieve word variants: (( scale development references customs. ) or ( female employment growth some. ))*.