Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cau treo » cau theo, cau tren, cau triet
thanh di » thanh doi, thanh de, thanh do
lang xa » lang ha, dang xay, lang van
sach tu » sach thu, cach tu, sach uu
sach ty » sach y, sach thu, xach tay
van cam » van lam, van cau, van dam
loc ban » lo ban, hoc ban, coc ban
di cau » da cau, diem cau

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) or (sach tu)) lang xa hoi. hieu ((van cam) or (van nam)) loc ban thanh di cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach tu)) lang xa hoi. hieu ((van cam) OR (van nam)) loc ban thanh di cau treo.
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) or (sach tu)) lang xa hoi. hieu ((van cam) or (van nam)) loc ban thanh di cau treo*.