Perhaps you should try some spelling variations:
nang thanh » dang thanh, tang thanh, nhanh thanh
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
nang phan » nang phat, nang quan, dung phan
chi hanh » chi nhanh, chi thanh, thi hanh
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 phan) OR (nang thanh)) 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 phan) OR (nang thanh)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi hanh - canh tranh cua ((hang cong) or (bang cong)) ((nang phan) OR (nang thanh)) cau".
• Adding a wildcard symbol may retrieve word variants: doi chi hanh - canh tranh cua ((hang cong) or (bang cong)) ((nang phan) OR (nang thanh)) cau*.