Perhaps you should try some spelling variations:
theo chiet » theo chieu
thep thiet » thep viet, thuyet thiet
hanh doanh » hang doanh, chinh doanh, doanh doanh
phuong van » phung van, phuong lan, phuong va
doanh cua » doanh luan
cua trung » cua truong, xuan trung, cua nhung
phong van » phung van, thong van, phong va
quan cao » quang cao, quan cau, quan ao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chiet) OR (thep thiet)) tach - hanh doanh cua trung ((phuong van) or (phong van)) quan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chiet) OR (thep thiet)) tach - hanh doanh cua trung ((phuong van) OR (phong van)) quan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chiet) OR (thep thiet)) tach - hanh doanh cua trung ((phuong van) or (phong van)) quan cao".
• Adding a wildcard symbol may retrieve word variants: ((theo chiet) OR (thep thiet)) tach - hanh doanh cua trung ((phuong van) or (phong van)) quan cao*.