Perhaps you should try some spelling variations:
recursions » recessions, recursos, excursions, recursives, reversions, recursoss
reversions » reversion, recessions, reversing
revisions » revision, provisions, decisions
recursion » recursive, reversion, recursos
aversion » version
recession » regression

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((recursions or (reversions or revisions)) or ((recursion or aversion) or recession))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((recursions OR (reversions OR revisions)) OR ((recursion OR aversion) OR recession)).
• Adding a wildcard symbol may retrieve word variants: ((recursions or (reversions or revisions)) or ((recursion or aversion) or recession))*.