Perhaps you should try some spelling variations:
vay doanh » van doanh, ly doanh, voi doanh
doanh cua » doanh luan
lang van » dang van, tang van, hoang van
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, nam thu, nam tu
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
lang xa » lang ha, dang xay
cua cau » cua cac, cua chu, cua cay

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 y ((lang xa) or (lang van)) hoi. hieu van ((nam thuc) or (am thuc)) vay doanh cua cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((lang xa) OR (lang van)) hoi. hieu van ((nam thuc) OR (am thuc)) vay doanh cua cau tren.
• Adding a wildcard symbol may retrieve word variants: te sach y ((lang xa) or (lang van)) hoi. hieu van ((nam thuc) or (am thuc)) vay doanh cua cau tren*.