Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien, ve triet
te sach » toc sach
thi van » thi lan, thi hanh, thi nang
nam duc » nam duoc, pham duc, nam thuc
duc van » duc va, duc tan, duc manh
y nang » ky nang, ly nang, v nang
co hoi » co hoc, co loi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang ((co hoi) or (cau hoi)). thi van nam duc van hanh vi ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((co hoi) OR (cau hoi)). thi van nam duc van hanh vi ((cua triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((co hoi) or (cau hoi)). thi van nam duc van hanh vi ((cua triet) or (su triet))*.