Denshi Jisho — Online Japanese dictionary

何処か どこか somewhere; anywhere; in some respects
Common word, Expression, Noun, Adverb, Usually written using kana alone 
何処か どっか somewhere; anywhere; in some respects
Irregular kana usage, Expression, Noun, Adverb, Usually written using kana alone 
何処かしら どこかしら 1: (Usually written using kana alone) in some way; somehow or other;
2: (Usually written using kana alone) somewhere or other
Expression, Adverb 

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