Perhaps you should try some spelling variations:
doanh luan » doanh nhan
hanh doanh » hang doanh, chinh doanh, doanh doanh
mot chieu » doi chieu, ho chieu
luan dung » lan dung, luan dong, luan hung
dung cong » dung trong
cong anh » cong danh, dong anh, hong anh
tuan tai » toan tai, quan tai, tan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (mot tri)) tinh - hanh doanh luan dung cong anh tuan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (mot tri)) tinh - hanh doanh luan dung cong anh tuan tai.
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (mot tri)) tinh - hanh doanh luan dung cong anh tuan tai*.