Perhaps you should try some spelling variations:
resource theories » resource theory, resources series, resource agencies
resources survey » resources surveys, resource survey, resources series
resource series » resources series, resource studies, resource users
wbi learning » 2 learning, 3 learning, 4 learning
a teaching » 1 teaching, 10 teaching

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

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