Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
qua nhung » quan nhung, cua nhung, qua chung
tranh qua » tranh cua, thanh qua, trinh qua
chi danh » chi anh, chi dinh, chi hanh
cong van » cong vang, cong san, song van
chi dan » choi dan, chi van, thi dan
tuan cu » tuan tu, quan cua, tuan thu
luan » lan

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: doi ((chi danh) OR (chi dan)) - canh tranh qua nhung cong van ((tuan cu) OR (quan luan))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chi danh) OR (chi dan)) - canh tranh qua nhung cong van ((tuan cu) or (quan luan))~".
• Adding a wildcard symbol may retrieve word variants: doi ((chi danh) OR (chi dan)) - canh tranh qua nhung cong van ((tuan cu) or (quan luan))*.