Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thanh vai » thanh hai, thanh van, thanh tai
cham hoi » cham voi, cham h'roi, pham hoai
va thanh » gia thanh, ban thanh, va tinh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
y tang » ky tang, 6 tang, 7 tang
cam ly » tam ly, cam ky, cap ly
cam lo » nam lo, cam o
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach y tang ma hoi. hieu ve ((cham hoi) or (((cam ly) OR (cam lo)))) va thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y tang ma hoi. hieu ve ((cham hoi) OR (((cam ly) OR (cam lo)))) va thanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y tang ma hoi. hieu ve ((cham hoi) or (((cam ly) OR (cam lo)))) va thanh vai cua tre*".