Perhaps you should try some spelling variations:
recursions » recursos, excursions, recursives, reversions, recursoss
recursoss » recursos, precursors, recurso
reversions » reversion, perversions, revisions
recessions » regressions
recursion » recursive, reversion, recursos
recession » regression

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: (((recursions OR recursoss) OR (reversions OR recessions)) OR (recursion OR recession))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((recursions OR recursoss) or (reversions or recessions)) or (recursion or recession))~".
• Adding a wildcard symbol may retrieve word variants: (((recursions OR recursoss) or (reversions or recessions)) or (recursion or recession))*.