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
hieu quan » lieu quan, thien quan, hieu luat
thong van » trong van, thong va, thong quan
van han » van hanh, van phan, van nhan
han tai » hang tai, nhan tai, van tai
lien » bien, vien, tien

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