Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
ban hanh » ban hang
van cau » van dau, van hau, van chat
vai cua » dai cua, hai cua, lai cua
duc ban » duc tan, duc van, dua ban
van cam » van nam, van lam, van dam
sach ky » sach y, sach ty, sach kem
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky

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) OR (sac ky)) lang xa hoi. hieu ((van cam) or (van cau)) duc ban hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) lang xa hoi. hieu ((van cam) OR (van cau)) duc ban hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sac ky)) lang xa hoi. hieu ((van cam) or (van cau)) duc ban hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sac ky)) lang xa hoi. hieu ((van cam) or (van cau)) duc ban hanh vai cua tre*.