Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
cau treo » cau theo, cau tren, cau triet
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
vu hang » vu hoang, vu khang, vu dang
ve cau » ke cau, ve cac, ve cai
le cau » ke cau, le mau, le cap
va cau » van cau, va cac, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ty xang xa hoi. hieu ((ve cau) or (le cau)) phuc vu hang va cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ty xang xa hoi. hieu ((ve cau) OR (le cau)) phuc vu hang va cau treo*.