Perhaps you should try some spelling variations:
hang doanh » hanh doanh, nhung doanh, van doanh
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
doanh cua » doanh luan
cua thong » cua thuong, cua khong, cua tong
tang van » dang van, hoang van, trong van
tan van » tran van, luan van, dang van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - hang doanh cua thong cong ((tan van) or (tang van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hang doanh cua thong cong ((tan van) OR (tang van)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hang doanh cua thong cong ((tan van) or (tang van)) ban*.