Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh lai » danh sai, gianh lai, dinh lam
dang mat » dang vat, dang mau, dung mat
nam thuc » nam thuoc, am thuc, nam thu
hieu van » hieu va, thien van, lieu va
cam tuc » cam xuc, cam tu, dam thuc
lai cua » dai cua, hai cua, lai chau
va danh » va dinh, va dan, va hanh
tu sach » thu sach, te sach, tu cach
mat hoi » mai hoi, sat hoi, mat troi
ky dang » ky nang, ky danh
su sach » so sach, vu sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (su sach)) ky dang mat hoi. hieu van ((cam tuc) or (nam thuc)) va danh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky dang mat hoi. hieu van ((cam tuc) OR (nam thuc)) va danh lai cua triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky dang mat hoi. hieu van ((cam tuc) or (nam thuc)) va danh lai cua triet*.