Perhaps you should try some spelling variations:
teaching resourcess » teaching resources, teaching resource, learning resources
learning resource » learning resources, learning research, teaching resource
resourcess series » resources series, sources series, resources fisheries
resource series » resources series, resource theories, resource studies

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( e learning resource series. ) or ( _ teaching resourcess series. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( e learning resource series. ) OR ( _ teaching resourcess series. )).
• Adding a wildcard symbol may retrieve word variants: (( e learning resource series. ) or ( _ teaching resourcess series. ))*.