Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va trien » va truyen, va thiet, va tuyen
danh dau » lanh dao, hang dau, danh tu
cham luc » cham soc, nhan luc, cham cuu
hieu va » lieu va, hieu qua
va cham » va chat, va tham
va danh » va dinh, va dan, va hanh
tang ma » tang van
te sach » toc sach
luc va » duc va, tuc va, loc va

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 ((tang ma) or (mang may)) hoi. hieu va cham luc va danh dau ((cua triet) or (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((tang ma) OR (mang may)) hoi. hieu va cham luc va danh dau ((cua triet) OR (va trien)).
• Adding a wildcard symbol may retrieve word variants: te sach y ((tang ma) or (mang may)) hoi. hieu va cham luc va danh dau ((cua triet) or (va trien))*.