Perhaps you should try some spelling variations:
resource theories » resource theory, resources series, resource agencies
teaching resource » teaching resources, teaching research, learning resource
resource survey » resources surveys, resource curse, resource security
water resource » water resources
3 teaching » 1 teaching, 4 teaching, 10 teaching
smi water » i water, ii water

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( smi water resource theories. ) or ( 3 teaching resource survey. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( smi water resource theories. ) OR ( 3 teaching resource survey. )).
• Adding a wildcard symbol may retrieve word variants: (( smi water resource theories. ) or ( 3 teaching resource survey. ))*.