Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
cuu thuc » cuu tac
van cam » van nam, van lam, van cau
va danh » va dinh, va hanh, dia danh
y nang » ky nang, ly nang, v nang
va dan » ca dan, va dao, va dau
vi cuu » vi luu, vinh cuu
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: thu sach y nang x hoi. hieu van cam xuc ((va danh) or (va dan)) vi cuu thuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang x hoi. hieu van cam xuc ((va danh) OR (va dan)) vi cuu thuc.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang x hoi. hieu van cam xuc ((va danh) or (va dan)) vi cuu thuc*.