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comb through (something)
To carefully look through an area or an item in an attempt to find someone or something. We combed through the wreckage but still haven't found any survivors. I combed through my bag in search of my glasses, and they were on my head the whole time!
comb through something
Fig. to look through something, examining it thoroughly. I combed through all my belongings, looking for the lost papers. The vet combed through the dog's coat, looking for tick bites.