Perhaps you should try some spelling variations:
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"coder solution data clustering problem" » "coder solution data covering problem" (Expand search), "coder solution and clustering problem" (Expand search), "code solution data clustering problem" (Expand search), "powder solution data clustering problem" (Expand search), "copper solution data clustering problem" (Expand search), "coder resolution data clustering problem" (Expand search), "coder pollution data clustering problem" (Expand search), "coder evolution data clustering problem" (Expand search)

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