Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
lam thuoc » nam thuoc, am thuc, cay thuoc
hieu van » hieu va, thien van, lieu va
lam duoc » nam duoc, luat duoc, tao duoc
hanh dai » hanh tai, hanh dao, vanh dai
su sach » so sach, vu sach
sach ly » sach y, sach lo, sach ty
ly hang » ly quang
va hanh » van hanh, va thanh, va danh
va hoi » xa hoi, va hoc, va hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ly hang va hoi. hieu van ((lam duoc) OR (lam thuoc)) va hanh dai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ly hang va hoi. hieu van ((lam duoc) OR (lam thuoc)) va hanh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ly hang va hoi. hieu van ((lam duoc) OR (lam thuoc)) va hanh dai cua triet*.