Perhaps you should try some spelling variations:
variable » variables
vitalle » evitable, vidalle, vialle
vialle » viallet, valle, viable
vitale » vitales, vitae, vidale, viale
revisable » previsible
vida » via
vital » vidal, vial
vistal » vista, vistas, nistal

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: ((variable OR (((vitalle OR vialle) OR vitale) OR revisable)) OR ((vida OR vital) OR vistal)).~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((variable or (((vitalle OR vialle) or vitale) or revisable)) or ((vida or vital) or vistal)).~".
• Adding a wildcard symbol may retrieve word variants: ((variable or (((vitalle OR vialle) or vitale) or revisable)) or ((vida or vital) or vistal)).*.