Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
canh doanh » hanh doanh, chinh doanh, doanh doanh
doanh cua » doanh luan
bang cong » dang cong, bang song, hang cong
chi xanh » chi anh, chi danh, chi hanh
san chan » san chang, dan chan, san chay
doi chi » doi khi
chan tu » phan tu, han tu, chon tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi xanh - canh doanh cua ((nhung cong) or (bang cong)) san chan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - canh doanh cua ((nhung cong) OR (bang cong)) san chan tu.
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - canh doanh cua ((nhung cong) or (bang cong)) san chan tu*.