Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
vai cua » dai cua, hai cua, lai cua
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
tu cach » tu cac
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
y tang » ky tang, 6 tang, 7 tang
cham o » cham soc
cam ky » cao ky, cac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (tu cach)) y tang ma hoi. hieu ve ((cham o) or (cam ky)) va thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu cach)) y tang ma hoi. hieu ve ((cham o) OR (cam ky)) va thanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (tu cach)) y tang ma hoi. hieu ve ((cham o) or (cam ky)) va thanh vai cua tre*.