Is there a similar word in Vietnamese or Filipino that is equivalent to "lang" in the phrases "I don't care lang" or "Hindi ko alam lang"?

 In both Vietnamese and Filipino (Tagalog), the equivalent word to "lang" (which means "just" or "only") is used similarly to downplay or limit the action described.

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### Filipino (Tagalog)

In Filipino (Tagalog), "lang" is actually used as is. It functions to convey a sense of "just" or "only" in various contexts. 

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For example:

- "I don't care lang" would be "Wala akong pakialam lang" or more naturally, "Wala lang akong pakialam."

- "Hindi ko alam lang" would be "Hindi ko lang alam."

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### Vietnamese

In Vietnamese, the word that serves a similar function is "chỉ." This word means "only" or "just" and is used to limit or specify the scope of an action or statement.

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For example:

- "I don't care lang" might translate to "Tôi không quan tâm chỉ" (although it sounds more natural to say "Tôi chỉ không quan tâm").

- "Hindi ko alam lang" would translate to "Tôi chỉ không biết."

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In summary:

- **Filipino (Tagalog):** "lang" is used directly.

- **Vietnamese:** "chỉ" serves a similar purpose 

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