Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
chat truc » cau truc, chat xuc
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
van chat » cao chat
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh

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

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