Perhaps you should try some spelling variations:
interactions series » interaction terms, interactions between
since interactions » face interactions, state interactions, species interactions
support strategic » support strategy, sector strategic, effort strategic
allocation system » education system, collection system, innovation system
support since » support price

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( support since interactions series. ) or ( support strategic allocation system. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( support since interactions series. ) OR ( support strategic allocation system. )).
• Adding a wildcard symbol may retrieve word variants: (( support since interactions series. ) or ( support strategic allocation system. ))*.