Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh luan » doanh nhan
luan thong » luan phong, luan tuong, luat thong
lieu quan » lien quan, lieu van
thong van » trong van, thong va, thong quan
hang tai » hang va, dung tai
han tai » nhan tai, van tai, toan tai

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

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