Perhaps you should try some spelling variations:
cua triet » su triet, va triet
hieu van » thien van, lieu va, hieu ve
van hanh » van thanh, ban hanh, van anh
cua viet » ca viet, hoa viet, cua vat
hieu va » lieu va, hieu qua
duc van » duc va, duc tan, duc manh
hanh de » hanh ve, hanh kem
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
x hoi » xa hoi, o hoi, x ho

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 x hoi. ((hieu van) OR (hieu va)) pham duc van hanh de ((cua triet) OR (cua viet))~.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang x hoi. ((hieu van) or (hieu va)) pham duc van hanh de ((cua triet) or (cua viet))*.