Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky

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 xa) OR (nang x)) hoi. ((hieu ve) OR (hieu va)) cam duc va hanh va su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((nang xa) OR (nang x)) hoi. ((hieu ve) or (hieu va)) cam duc va hanh va su triet~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((nang xa) OR (nang x)) hoi. ((hieu ve) or (hieu va)) cam duc va hanh va su triet*.