Perhaps you should try some spelling variations:
information sources » information resources, information services, information security
social information » social innovation, social transformation, digital information
hiv transmission » child transmission, _ transmission
senegal social » nepal social, essential social
lines » line

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( senegal social information sources ) or ( _ hiv transmission lines ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( senegal social information sources ) OR ( _ hiv transmission lines )).
• Adding a wildcard symbol may retrieve word variants: (( senegal social information sources ) or ( _ hiv transmission lines ))*.