Perhaps you should try some spelling variations:
training resource » training resources, training research, training sources
teaching resource » teaching resources, teacher resource, learning resources
resource survey » resource curse, resource strategy, resource studies
job training » _ training
wbi teaching » _ teaching, wbi training
shifting. » shipping.

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( job training resource survey. ) OR ( wbi teaching resource shifting. ))~.
• Adding a wildcard symbol may retrieve word variants: (( job training resource survey. ) or ( wbi teaching resource shifting. ))*.