Perhaps you should try some spelling variations:
doanh luan » doanh nhan
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » manh cua
cong dan » cong san, cong tan, huong dan
dan thai » dang thai, dan thi, dan than
thai cao » tai cao, thoai cac, thuat cao
ho hieu » ho chieu, hoi hieu, nho hieu

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: ho hieu lang - hanh ((((tranh cua) OR (doanh cua))) OR (doanh luan)) nhung cong dan thai cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - hanh ((((tranh cua) OR (doanh cua))) or (doanh luan)) nhung cong dan thai cao~".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh ((((tranh cua) OR (doanh cua))) or (doanh luan)) nhung cong dan thai cao*.