Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cau treo » cau theo, cau tren, cau triet
va thanh » gia thanh, va tinh, le thanh
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
ma hoi » mai hoi, xa hoi, ma hoa
sach v » sach va, sach 2, sach vay
ve coc » ve cuoc, ve cac, ve co
vi cau » va cau, ve cau, di cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach v) or (sach y)) nang ma hoi. hieu ve coc luc ((va thanh) OR (ban thanh)) vi cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach v) OR (sach y)) nang ma hoi. hieu ve coc luc ((va thanh) OR (ban thanh)) vi cau treo*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach v) or (sach y)) nang ma hoi. hieu ve coc luc ((va thanh) OR (ban thanh)) vi cau treo*".