Perhaps you should try some spelling variations:
vital » vial, vidal, vilal, rital
vival » vial, vivas, viral, vivasl, vidal, vilal
viva » vivas, vida, vila
vidal » vida
variable » variables
vita » vida, vila, rita
vista » visto
resisten » resistente, resistant, resisting

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: ((((vital OR ((vival OR viva) OR vidal)) OR variable) OR ((vita OR vista) OR via)) OR resisten).~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((vital or ((vival OR viva) or vidal)) or variable) or ((vita or vista) or via)) or resisten).~".
• Adding a wildcard symbol may retrieve word variants: ((((vital or ((vival OR viva) or vidal)) or variable) or ((vita or vista) or via)) or resisten).*.