Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
canh doanh » hanh doanh, chinh doanh, doanh doanh
doanh luan » doanh nhan
thong cong » tong cong, thong thong, phong chong
hieu lang » chieu sang, nhieu tang, hieu van
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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) OR (hieu quang)) - canh doanh luan ((thong cong) or (trong cong)) tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (hieu quang)) - canh doanh luan ((thong cong) OR (trong cong)) tan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) OR (hieu quang)) - canh doanh luan ((thong cong) or (trong cong)) tan toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) OR (hieu quang)) - canh doanh luan ((thong cong) or (trong cong)) tan toan cau*.