Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh luan » doanh nhan
phung cong » nhung cong, phong cong, nhung chong
dung cong » dung trong
hoc hieu » hoc thieu, hoc hien, doc hieu
dan toan » van toan, dan than, manh 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: hoc hieu quang - hanh doanh luan ((phung cong) or (dung cong)) dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu quang - hanh doanh luan ((phung cong) OR (dung cong)) dan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hieu quang - hanh doanh luan ((phung cong) or (dung cong)) dan toan cau*.