This is the 7167th most frequent Russian word.
ва
"Ва" does not have a standalone meaning in Russian; it may be a fragment or part of a larger word or phrase.
The word 'ваш' is used here to mean 'your' (possessive pronoun) referring to a second person singular/plural in formal address.
Она спрашивает: 'Где ваш телефон?'
She asks: 'Where is your phone?'
The word 'ва' could inaccurately seem like an abbreviation or part of a mistaken phrase as it doesn't fit here naturally; perhaps 'ва-' was meant to initiate something but lacks clarity.
Ва снега зимы покрыли деревья.
The snows of winter covered the trees.
The insertion of 'ва' seems misplaced or colloquial; typically, 'ваш' or similar derivative forms would suit better, showing unclear function.