Perhaps you should try some spelling variations:
hieu cac » hieu luc, hieu va, hieu van
hanh vai » hanh vi, hanh va, hanh tai
chat tuc » chat xuc, luat tuc, chat huu
hieu cao » chieu cao, hieu ca, kieu cao
su sach » so sach, vu sach
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
yu hang » yu zhang, yu pang, yu wang
y hang » ly hang, ty hang, _ hang
co hoi » co hoc, co loi
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((y hang) or (yu hang)) co hoi. ((hieu cao) or (hieu cac)) chat tuc va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y hang) OR (yu hang)) co hoi. ((hieu cao) OR (hieu cac)) chat tuc va hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ((y hang) or (yu hang)) co hoi. ((hieu cao) or (hieu cac)) chat tuc va hanh vai cua tre*.