Perhaps you should try some spelling variations:
inclusion sources » conclusion sources, inclusion series, discussion sources
transmission line » transmission lines, transmission _
social inclusion » social exclusion
gas transmission » _ transmission, hiv transmission
senegal social » bengal social, general social, senegalese social

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 inclusion sources ) or ( _ gas transmission line ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( senegal social inclusion sources ) OR ( _ gas transmission line )).
• Adding a wildcard symbol may retrieve word variants: (( senegal social inclusion sources ) or ( _ gas transmission line ))*.