The kanji 過過 primarily conveys the idea of "to pass," "to exceed," "to go beyond," or "to overdo." It implies movement or action that transcends a limit or boundary, whether physical, temporal, or conceptual. It can also refer to something that is excessive or beyond what is appropriate.

・On-yomi (音読み): カ (ka) ・Kun-yomi (訓読み): す（ぎる） (sugiru - to exceed, to pass), あやま（ち） (ayamachi - mistake, error)

⚫︎ 過 (か) 去 (こ) Translation: Past, the past tense. ⚫︎ 過 (す) ぎる Translation: To pass (time), to exceed. ⚫︎ 過 (あやま) ち Translation: Mistake, fault, error.

I am unable to determine the correspondence between the kanji 過過 and Vietnamese.

The kanji 過過 is a phono-semantic compound (形声文字). The phonetic component is 冎 (kua), which represents the sound. The semantic component is 辶 (shinnyou) or ⻌, which is the "walk" radical and indicates movement. This combination suggests the idea of going past something, exceeding a limit, or passing through a place. The original form may have depicted someone walking or going over a boundary. Over time, the character evolved to its current form.