"Tôi gần như tin anh ấy."

Translation: I almost believe him.

[qm1224]

近如 in Vietnamese, 近乎 in Chinese

[TehVanarch]

Technically yes but then again not quite! 近 in standard Sino-Vietnamese is cận while gần, although most likely from the same origin, was borrowed much earlier on.

[qm1224]

perhaps it was similar to 家 ("gia" vs "nhà")

[TehVanarch]

There is actually another debated origin of that word coming from 庌 which means something like a house on a cliff. Nha is similar to nhà and the meaning + the semantic component is somewhat of a match.

[SakuKaarak]

Where do you find this profound information? Wiktionary doesn't have much info.
I am also interested in words' origins of a language.