Perhaps you should try some spelling variations:
information sources » information resources, information services, information security
transmission line » transmission lines, transmission _
hiv transmission » child transmission, _ transmission
nepal social » legal social, deal social, real social
local social » global social

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((nepal social) OR (local social)) information sources ) or ( _ hiv transmission line ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((nepal social) OR (local social)) information sources ) OR ( _ hiv transmission line )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((nepal social) OR (local social)) information sources ) or ( _ hiv transmission line ))".
• Adding a wildcard symbol may retrieve word variants: (( ((nepal social) OR (local social)) information sources ) or ( _ hiv transmission line ))*.