Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
thien van » thi van
cau treo » cau theo, cau tren, cau triet
ba trung » tai trung, nam trung, do trung
dang xay » dang van, van xay
va doanh » van doanh, vay doanh, va danh
van cau » van dau, van hau, van chat
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ba truc » cau truc, dai truc, nam truc

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 ((nang x) or (dang xay)) hoi. thien van ((ba truc) OR (ba trung)) va doanh van cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang x) OR (dang xay)) hoi. thien van ((ba truc) OR (ba trung)) va doanh van cau treo*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang x) or (dang xay)) hoi. thien van ((ba truc) OR (ba trung)) va doanh van cau treo*".