Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
long ha » cong ha, dong hoa, cong hoa
dong ha » dong hoa, dong va, dong hoc
van lam » van nam
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
lam lo » nam lo, lam co, cam lo
lo van » le van, vo van, so van

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 ((((long ha) OR (dong ha))) OR (van xay)) hoi. hieu van lam lo van hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((((long ha) OR (dong ha))) or (van xay)) hoi. hieu van lam lo van hanh vai cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((((long ha) OR (dong ha))) or (van xay)) hoi. hieu van lam lo van hanh vai cua tre*.