nowhere

My keys are nowhere to be found; I've checked every room twice.

(Chinese) 我的钥匙无处可寻；我已经每个房间检查了两遍。

The lost city of Atlantis is said to be located nowhere on modern maps.

(Chinese) 据说失落的亚特兰蒂斯城在现代地图上无处可寻。