Here's what rhymes with obrigou.
coup qu ku coo cou gu goo to who you do two new too due knew du grew que u crew q shoe zu clue cue dew glue lieu queue renew shew su sue tu vous chew cu deux fu lu rue zoo bu hu ju jus loo mu nu peu pu seu shu sou vu woo yew yu boo chou chu doo ewe feu ru shou thu tue vou wou wu clew moo pooh poo shoo gnu roux thew whew achoo into through few true view blue drew threw blew flew screw anew canoe hue accrue ensue flue slew stew adieu ado brew flu jusqu pew skew thru beaucoup eschew fue hew mieux revue shrew tzu vue mew redo kazoo slue phew prevue regrew review pursue bamboo undue debut taboo undo caribou piu tattoo barbecue outdo sinew sprue vnto askew imbue outgrew strew ballyhoo halloo spew valuer barbeque endue foreknew zebu indue wazoo booboo atishoo revenue hitherto overview residue withdrew avenue rendezvous retinue subdue untrue overdue overthrew kangaroo shampoo overdo cockatoo bugaboo marabou peekaboo bestrew buckaroo muumuu overflew overshoe overdrew overgrew interview construe honeydew fondue superglue hullabaloo misconstrue