Perhaps you should try some spelling variations:
truyen tap » tuyen tap, truyen tai, truyen tam
doanh chu » doanh chau, doanh thu, doanh cho
doan thuc » doanh thuc, dan thuc, toan thuc
cong cong » cong dong, trong cong, dang cong
dung cong » dung trong
ban ve » ban va
ky tai » ly tai, ky thi, kg tai
ve ky » va ky, ke ky

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

• If you are trying to use Boolean operators, they must be ALL CAPS: truyen tap ((doanh chu) OR (doan thuc)) đe co ban ve ky tai ((cong cong) OR (dung cong))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "truyen tap ((doanh chu) or (doan thuc)) đe co ban ve ky tai ((cong cong) OR (dung cong))~".
• Adding a wildcard symbol may retrieve word variants: truyen tap ((doanh chu) or (doan thuc)) đe co ban ve ky tai ((cong cong) OR (dung cong))*.