Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
khoan cam » khoa cam, khoan va, phan cam
cua hang » cua dang, cua nhung, cua cong
cong ban » cong bang, cong san, cong tan
khan cap » khan ap, than cap, phan cac
hoi chu » hoi chuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoi chu) or (doi khi)) tinh - hanh tranh cua hang cong ban ((khan cap) OR (khoan cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoi chu) OR (doi khi)) tinh - hanh tranh cua hang cong ban ((khan cap) OR (khoan cam)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoi chu) or (doi khi)) tinh - hanh tranh cua hang cong ban ((khan cap) OR (khoan cam))".
• Adding a wildcard symbol may retrieve word variants: ((hoi chu) or (doi khi)) tinh - hanh tranh cua hang cong ban ((khan cap) OR (khoan cam))*.