Perhaps you should try some spelling variations:
su triet » su tien, ve triet
hanh doi » thanh doi, hanh noi, hang doi
su viet » so viet
ky tang » ky nang, ky dang, kho tang
tang ho » tang cho, tung ho, tang ha
hieu ve » hieu va, hieu van
tuc ban » thuc ban, truc ban, tuc dan
su xac » pu xac, su cac
tu ban » thu ban, te ban
xac ky » cac ky, sac ky, bac ky
ve cam » ve cham, ve cac, va cam
ho hoi » hoc hoi, hoa hoi, hoi hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: su xac ky tang ho hoi. hieu ve cam ((tuc ban) or (tu ban)) hanh doi ((su triet) OR (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su xac ky tang ho hoi. hieu ve cam ((tuc ban) OR (tu ban)) hanh doi ((su triet) OR (su viet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su xac ky tang ho hoi. hieu ve cam ((tuc ban) or (tu ban)) hanh doi ((su triet) OR (su viet))*".