Perhaps you should try some spelling variations:
hang doanh » nhung doanh, van doanh, dung doanh
hanh doanh » chinh doanh, doanh doanh, kinh doanh
hieu quan » lieu quan, thien quan, lien quan
cua thong » cua thuong, cua khong, cua tong
thong van » trong van, thong va, thong quan
van han » van hanh, van phan, van nhan
han tai » hang tai, nhan tai, van tai

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