Perhaps you should try some spelling variations:
variable » variables
viade » viadel, viader, vide
viadal » viadel, piadal, vidal, vianal, viudal
viada » vida, viana, viuda
vider » video, vide, lider
vitae » vistae, viae, vidae
vita » vista, via, vida
vital » vistal, vial, vidal

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

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