Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
hieu quang » thieu quang, hieu qua, diep quang
hieu quan » hieu qua, lieu quan, thien quan
cua thong » cua thuong, cua khong, suat thong
thong van » trong van, thong va, thong quan
cua tong » cua cong, cua dong, cua nong
van anh » van thanh, tuan anh, van minh
tuan » tran, luan, toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu quang) or (hieu quan)) - hanh doanh ((cua thong) OR (cua tong)) thong van anh tuan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu quang) OR (hieu quan)) - hanh doanh ((cua thong) OR (cua tong)) thong van anh tuan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu quang) or (hieu quan)) - hanh doanh ((cua thong) OR (cua tong)) thong van anh tuan".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu quang) or (hieu quan)) - hanh doanh ((cua thong) OR (cua tong)) thong van anh tuan*.