Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
cau treo » cau theo, cau tren, cau triet
va doanh » van doanh, vay doanh, va danh
hieu van » hieu va, thien van, lieu va
lam duoc » nam duoc, luat duoc, lam thuoc
van lam » van nam
duoc va » nuoc va, duc va, duoc ma
nang xa » lang xa, nang ma, mang xa
cuu tre » cua tre, cau tren
sac ky » cac ky, sai ky
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky ((nang xa) or (nang x)) hoi. hieu van lam duoc va doanh van ((cuu tre) OR (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((nang xa) OR (nang x)) hoi. hieu van lam duoc va doanh van ((cuu tre) OR (cau treo)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky ((nang xa) or (nang x)) hoi. hieu van lam duoc va doanh van ((cuu tre) OR (cau treo))".
• Adding a wildcard symbol may retrieve word variants: te sac ky ((nang xa) or (nang x)) hoi. hieu van lam duoc va doanh van ((cuu tre) OR (cau treo))*.