Perhaps you should try some spelling variations:
basics techniques » basic techniques, basic technique, based techniques
techniques paper » techniques upper, techniques peter, techniques pattern
basics technical » basic technical, basic technique, its technical
world basics » world basic, word basics, world brics

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: (( world basics techniques paper ) OR ( world basics technical papers )).
• Adding a wildcard symbol may retrieve word variants: (( world basics techniques paper ) or ( world basics technical papers ))*.