Perhaps you should try some spelling variations:
khien tinh » thien tinh, khien thich, bien tinh
canh doanh » hanh doanh, chinh doanh, doanh doanh
doanh luan » doanh nhan
nhung cong » thong cong, hang cong, nhung don
hoc khien » hoc hien, hoc nghien, hoc thieu
dung cong » dung trong
hang cau » hang dau, nhung cau, nang cao
hang ca » hang va, nang cao, hang tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc khien tinh - canh doanh luan ((nhung cong) OR (dung cong)) ban ((hang cau) or (hang ca))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc khien tinh - canh doanh luan ((nhung cong) OR (dung cong)) ban ((hang cau) OR (hang ca)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc khien tinh - canh doanh luan ((nhung cong) OR (dung cong)) ban ((hang cau) or (hang ca))".
• Adding a wildcard symbol may retrieve word variants: hoc khien tinh - canh doanh luan ((nhung cong) OR (dung cong)) ban ((hang cau) or (hang ca))*.