Perhaps you should try some spelling variations:
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
chi danh » chi dan, chi anh, chi dinh
chi hanh » chi nhanh, chi thanh, thi hanh
tranh va » tranh van, trang va, trinh va
tac phat » tac pham, tam phat, tan phat
phat cau » phan cau, pha cau, phap cau

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 danh) or (chi hanh)) - canh tranh va ((hang cong) OR (bang cong)) tac phat cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi danh) OR (chi hanh)) - canh tranh va ((hang cong) OR (bang cong)) tac phat cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chi danh) or (chi hanh)) - canh tranh va ((hang cong) OR (bang cong)) tac phat cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chi danh) or (chi hanh)) - canh tranh va ((hang cong) OR (bang cong)) tac phat cau*.