Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
qua cham » qua hai, qua cac, va cham
cham duy » pham duy, pham duc, cham cuu
sinh cua » manh cua, dinh cuu, sinh va
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
duy ban » uy ban, duy van, duy can
vi luu » vi lua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty xang xa hoi. hieu qua cham duy ban thanh ((vi luu) or (sinh cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang xa hoi. hieu qua cham duy ban thanh ((vi luu) OR (sinh cua)) tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty xang xa hoi. hieu qua cham duy ban thanh ((vi luu) or (sinh cua)) tre*.