Perhaps you should try some spelling variations:
teaching resource » teaching resources, teaching research, learning resource
courier services » tourism services, under services
resource survey » resources surveys, resource curse, resource security
course series » discourse series
wbi teaching » ii teaching, i teaching, iii teaching

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( wbi teaching resource survey. ) or ( e learning ((course series) OR (courier services)). ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( wbi teaching resource survey. ) OR ( e learning ((course series) OR (courier services)). ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( wbi teaching resource survey. ) or ( e learning ((course series) OR (courier services)). ))*".