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I couldn't find my watch anywhere.
Literal
Wristwatch [topic-は] anywhere [locative-にも] not-be-found.
A frustrated statement about a lost watch. 腕時計 (うでどけい) is 'wristwatch' — literally 'arm clock'. 見つかる ('to be found') is the intransitive pair of 見つける ('to find'). どこにも + negative = 'nowhere, not anywhere'. The past tense 見つからなかった expresses a completed unsuccessful search.