Perhaps you should try some spelling variations:
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
nang quan » ban quan, nang suat
chi hanh » chi nhanh, chi thanh, thi hanh
quan cau » quang cao, toan cau, quan ha
doi chi » doi khi

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 hanh - canh tranh cua ((hang cong) or (bang cong)) nang quan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi hanh - canh tranh cua ((hang cong) OR (bang cong)) nang quan cau.
• Adding a wildcard symbol may retrieve word variants: doi chi hanh - canh tranh cua ((hang cong) or (bang cong)) nang quan cau*.