Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
thanh vi » thanh va, thanh ve, nhanh vi
chai tu » cai tu, choi tu, chay tu
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
cham tu » pham tu, cam tu, chay tu
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ma hoi. hieu ve ((cham tu) OR (chai tu)) va ((thanh vi) OR (hanh vi)) su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ma hoi. hieu ve ((cham tu) OR (chai tu)) va ((thanh vi) or (hanh vi)) su triet~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ma hoi. hieu ve ((cham tu) OR (chai tu)) va ((thanh vi) or (hanh vi)) su triet*.