Here's what rhymes with koltso.
so though show tho fo foe ho ceux faut hoe sew soe vo sho zo no know go low co flow blow slow snow throw pro row lo bo doe dough fro mo po ro toe wo woe thro tow yo beau bio goe jo ko beaux cho dau floe mow noe roe tuo yeux bro rho stow throe trow sloe whoa doh borzoi schmo resew schmoe although below ago ratio grow radio glow quo audio bestow chateau crow hello nouveau uno dicho rodeo topos chateaux dunno trousseau chapeau oleo tarot turbot deathblow kayo matzoh chapeaux fatso pekoe trousseaux overthrow plateau buffalo overflow folio patio portico calico forego forgo polio propos tableau aglow aliquot escrow outgrow siglo tableaux plateaux adagio kapok foreknow regrow bandeau gateau gateaux romeo tallyho embryo studio undergo indigo stereo dynamo vertigo apropos cameo domino medico spatio piccolo undertow overgrow portfolio bungalow politico mistletoe presidio afterglow oregano pistachio pompano mustachio microdot moustachio braggadocio pianissimo archipelago impresario generalissimo