Perhaps you should try some spelling variations:
canh doanh » hanh doanh, chinh doanh, doanh doanh
doanh tran » doanh tren, doanh thanh, doanh trong
hieu tinh » chieu tinh, lieu tinh, kieu tinh
dung cong » dung trong
trinh han » trinh quan
doc hieu » toc thieu, hoc thieu, hoc hien
han cau » hang cau, phan cau, van cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu tinh - canh doanh tran ((dang cong) or (dung cong)) trinh han cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu tinh - canh doanh tran ((dang cong) OR (dung cong)) trinh han cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu tinh - canh doanh tran ((dang cong) or (dung cong)) trinh han cau*.