Perhaps you should try some spelling variations:
canh doanh » hanh doanh, chinh doanh, doanh doanh
doanh luan » doanh nhan
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
hoc hieu » hoc thieu, hoc hien, doc hieu
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

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