Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
hanh than » hanh han, hanh nhan, hanh phan
su triet » su viet, su tien, ve triet
va thanh » gia thanh, ban thanh, va tinh
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
luc va » tuc va, loc va

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: te sac ky tang xa hoi. hieu va thanh ((luc va) OR (duc va)) hanh than ((cua triet) OR (su triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky tang xa hoi. hieu va thanh ((luc va) or (duc va)) hanh than ((cua triet) OR (su triet))~".
• Adding a wildcard symbol may retrieve word variants: te sac ky tang xa hoi. hieu va thanh ((luc va) or (duc va)) hanh than ((cua triet) OR (su triet))*.