Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
hieu van » hieu va, thien van, lieu va
hanh vai » hanh vi, hanh va, hanh tai
tu sach » thu sach, su sach, te sach
van cau » van dau, van hau, van chat
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
ang xa » lang xa, mang xa, dang xay

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach thu ((((ang xa) or (van xay))) or (nang x)) hoi. hieu van cau truc va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu ((((ang xa) OR (van xay))) OR (nang x)) hoi. hieu van cau truc va hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach thu ((((ang xa) or (van xay))) or (nang x)) hoi. hieu van cau truc va hanh vai cua tre*.