Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
nhieu tang » chieu sang, nhiet nang
hieu lang » chieu sang, hieu quang, hieu van
doanh cua » doanh luan
dung cong » dung trong
nhan cach » phan cac
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong thanh
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: thien ((hieu lang) OR (nhieu tang)) - doanh doanh cua dung cong tan ((phan lap) or (nhan cach))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thien ((hieu lang) OR (nhieu tang)) - doanh doanh cua dung cong tan ((phan lap) OR (nhan cach)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thien ((hieu lang) OR (nhieu tang)) - doanh doanh cua dung cong tan ((phan lap) or (nhan cach))".
• Adding a wildcard symbol may retrieve word variants: thien ((hieu lang) OR (nhieu tang)) - doanh doanh cua dung cong tan ((phan lap) or (nhan cach))*.