Perhaps you should try some spelling variations:
ban doanh » van doanh, san doanh, ban danh
cau treo » cau theo, cau tren, cau triet
doanh ha » doanh va, doanh khoa, doanh nhan
dang xay » dang van
sach ky » sac ky, sach y, sach ty
duc ban » duc tan, duc van, dua ban
te sach » toc sach
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
ha cau » ha chau, hoa cau, pha cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky ((dang xay) OR (van xay)) hoi. hieu ((ve cam) or (ve cac)) duc ban doanh ha cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((dang xay) OR (van xay)) hoi. hieu ((ve cam) OR (ve cac)) duc ban doanh ha cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((dang xay) OR (van xay)) hoi. hieu ((ve cam) or (ve cac)) duc ban doanh ha cau treo".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((dang xay) OR (van xay)) hoi. hieu ((ve cam) or (ve cac)) duc ban doanh ha cau treo*.