A sua pesquisa - communication ((channel basics) or (channel basin)) dimensions does too - não corresponde a nenhum registo.

Talvez deva tentar algumas variações de ortografia:
dimensions does » dimensions des, dimensions forces, dimensions doing
channel basics » channels asics, channel based, channel base
channel basin » channel based, change basin, channel base
does too » does top, does ceo, does eco

Pode obter mais resultados ajustando a pesquisa.