Perhaps you should try some spelling variations:
chinh doanh » kinh doanh
chieu tinh » trieu tinh, lieu tinh, chau tinh
doanh quan » doanh quang, doanh luan, doan quan
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu tinh) or (diep tinh)) - chinh doanh quan ((nhung cong) OR (thong cong)) san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (diep tinh)) - chinh doanh quan ((nhung cong) OR (thong cong)) san toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu tinh) or (diep tinh)) - chinh doanh quan ((nhung cong) OR (thong cong)) san toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (diep tinh)) - chinh doanh quan ((nhung cong) OR (thong cong)) san toan cao*.