Perhaps you should try some spelling variations:
variable » variables
vialle » valle, viable, viale
viallet » vallet, viablet, vialet, viollet
vitale » vitales, vitae, vistale, viale, vidale
equivale » equivalent, equipaje
vita » vista, via, vida
vital » vistal, vial, vidal
vistas » revistas

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((variable or (((vialle OR viallet) or vitale) or equivale)) or ((vita or vital) or vistas)).~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((variable OR (((vialle OR viallet) OR vitale) OR equivale)) OR ((vita OR vital) OR vistas)).*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((variable or (((vialle OR viallet) or vitale) or equivale)) or ((vita or vital) or vistas)).*".