"Lo! There it is", ta-da, presto(interjection)
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Use "voila" in a sentence
"With the expression voila! was heard a loud kiss, impressed on the check of the baron, then Lili Kerth, the gleaming of silk, diamonds, eyes, and hair turned toward the door of the antechamber and saw Kranitski."
"Felting happens at my home all the time – I forget to hang dry a sweater, put it in the dryer and one hour later there it is also known as voila!"
"Oh yes, it's a fine idea in theory, but in Gmail, if I need to find serial numbes (something I've need to do several times in the last year) I can just search for the game name voila!"