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няма защо angolul

BolgárAngol
няма защо interjection

not at all(conventional reply to expression of gratitude)
interjection
[UK: nɒt ət ɔːl] [US: ˈnɑːt ət ɔːl]

няма защо phrase

don't mention it(it is too trivial to warrant thanks)
phrase
[UK: dəʊnt ˈmen.ʃn̩ ɪt] [US: ˈdoʊnt ˈmen.ʃn̩ ˈɪt]

you're welcome(reply to thanks)
phrase