Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
cham tuc » nham thuc, pham thuc, cham soc
hanh dai » hanh tai, hanh dao, vanh dai
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky nang x hoi. hieu ve ((cham tuc) OR (tham thuc)) va hanh dai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang x hoi. hieu ve ((cham tuc) OR (tham thuc)) va hanh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang x hoi. hieu ve ((cham tuc) OR (tham thuc)) va hanh dai cua triet*.