Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, nam thuc
cay thuoc » cua thuoc, nam thuoc, va thuoc
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
hanh dai » hanh tai, hanh dao, vanh dai
te sach » toc sach
xay hoi » xa hoi, tay hoi, cay phoi
va hanh » van hanh, va thanh, va danh

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 _ van xay hoi. hieu van ((lam thuoc) OR (cay thuoc)) va hanh dai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach _ van xay hoi. hieu van ((lam thuoc) OR (cay thuoc)) va hanh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach _ van xay hoi. hieu van ((lam thuoc) OR (cay thuoc)) va hanh dai cua triet*.