Perhaps you should try some spelling variations:
interactions series » interaction terms, interactions between
strategy allocation » strategic allocation, strategic reallocation, strategy selection
face interactions » face interaction, market interactions, _ interactions
allocation legal » allocation social, allocation model
support face » support falls, support price, support since

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

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