Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
so sanh » do sanh
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
va hanh » van hanh, va thanh, va danh
sanh y » sinh y, anh y, hanh y
ve cam » ve cham, ve cac, va cam
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh y ((nang xa) OR (lang xa)) hoi. hieu ve cam tuc va hanh vi cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh y ((nang xa) OR (lang xa)) hoi. hieu ve cam tuc va hanh vi cua viet".
• Adding a wildcard symbol may retrieve word variants: so sanh y ((nang xa) OR (lang xa)) hoi. hieu ve cam tuc va hanh vi cua viet*.