Perhaps you should try some spelling variations:
doanh luan » doanh nhan
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
manh cua » ban cua
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - canh ((((doanh cua) OR (doanh luan))) or (manh cua)) thong cong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - canh ((((doanh cua) OR (doanh luan))) OR (manh cua)) thong cong dan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - canh ((((doanh cua) OR (doanh luan))) or (manh cua)) thong cong dan phan cau".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - canh ((((doanh cua) OR (doanh luan))) or (manh cua)) thong cong dan phan cau*.