Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
kho tang » cao tang
danh dau » lanh dao, hang dau, danh tu
hieu va » lieu va
va danh » va dinh, va dan, va hanh
ky tang » ky nang, ky dang, ky trong
dau cua » dai cua, day cua, cau cua
te sach » toc sach
ma hoi » mai hoi, xa hoi, ma hoa

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