Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
va danh » va dan, dia danh, va thanh
tai cua » thai cua, tai cuc, tri cua
va dinh » van dinh, va kinh, va tinh
va hanh » van hanh, va thanh, ban hanh
sach ky » sac ky, sach y, sach ty
hac tuc » thac toc, thai tuc
van hac » van hoc, van ha, van hai
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu van hac tuc ((va hanh) OR (((va danh) OR (va dinh)))) tai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu van hac tuc ((va hanh) or (((va danh) OR (va dinh)))) tai cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu van hac tuc ((va hanh) or (((va danh) OR (va dinh)))) tai cua tre*.