Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
sach kem » hanh kem
chau tre » chay tren, chau tho, cau tra
thanh ha » thanh hoa, thanh hai, nhanh ha
duc ban » duc tan, duc van, dua ban
cam duc » cam xuc, cao duc, pham duc
cho tre » cho thue, khoe tre
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach kem) or (sach y)) nang ma hoi. hieu ve cam duc ban thanh ha ((chau tre) OR (cho tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach kem) OR (sach y)) nang ma hoi. hieu ve cam duc ban thanh ha ((chau tre) OR (cho tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach kem) or (sach y)) nang ma hoi. hieu ve cam duc ban thanh ha ((chau tre) OR (cho tre))".
• Adding a wildcard symbol may retrieve word variants: te ((sach kem) or (sach y)) nang ma hoi. hieu ve cam duc ban thanh ha ((chau tre) OR (cho tre))*.