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

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 ky ((((ang xa) OR (mang xa))) OR (nang x)) hoi. hieu van cau truc va hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((((ang xa) OR (mang xa))) OR (nang x)) hoi. hieu van cau truc va hanh vai cua tre*".