Perhaps you should try some spelling variations:
chay tren » thai tren, ca tren, cau tren
hanh lai » hanh lam, hanh tai, thanh lap
ban hanh » ban hang
thu sach » tu sach, thuat sach, thuoc sach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
nang xa » nang x, lang xa, mang xa
cho tre » cho thue, khoe tre
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: thu sach ty ((nang xa) or (nang ma)) hoi. hieu ve cam duc ban hanh lai ((cho tre) or (chay tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((nang xa) OR (nang ma)) hoi. hieu ve cam duc ban hanh lai ((cho tre) OR (chay tren)).
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((nang xa) or (nang ma)) hoi. hieu ve cam duc ban hanh lai ((cho tre) or (chay tren))*.