comb (something) for (someone or something)
To look through an area in an attempt to find someone or something in particular. We combed the wreckage for survivors but still haven't found any. I've been combing the house for my glasses—have you seen them?
comb (something) out of (something)
To remove something, such as debris or knots, from something by combing. My poor daughter cries every time I try to comb the tangles out of her hair.
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!