not for the life of me

no matter how hard you try I knew I had met her before, only I couldn't for the life of me remember where or when.

Name	Pronounced	Usage
Delia	['di:ljə]
Evgenia	yev-GYE-nee-yah (Russian), eev-GYE-nee-yah (Russian)	Greek, Russian, Bulgarian
Bel-Sarra-Usur	-	Ancient Near Eastern
Esti	-	Basque
OlÍVia	-	Portuguese, Slovak, Hungarian
Nada (2)	-	Serbian, Croatian, Slovene, Macedonian