Perhaps you should try some spelling variations:
sach thue » sach thieu, sach tham, cach thuc
ban hanh » ban hang
hanh vai » hanh vi, hanh va, hanh tai
sach thu » sach thieu, sach tham, cach thuc
cua tre » cuu tre, cua triet, dua tren
hieu ve » hieu va, hieu van
duc ban » duc tan, duc van, dua ban
ve pham » vi pham, v pham, ve phan
dang xa » dang xay, lang xa, dang ha
cua te » cua tu

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 thu) or (sach thue)) dang xa hoi. hieu ve pham duc ban hanh vai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach thu) OR (sach thue)) dang xa hoi. hieu ve pham duc ban hanh vai ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: su ((sach thu) or (sach thue)) dang xa hoi. hieu ve pham duc ban hanh vai ((cua tre) or (cua te))*.