Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
khan cap » khan ap, than cap, khoan cam
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 thong ((cong ban) OR (cong san)) khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoi chu) OR (doi khi)) tinh - hanh tranh cua thong ((cong ban) OR (cong san)) khan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoi chu) or (doi khi)) tinh - hanh tranh cua thong ((cong ban) OR (cong san)) khan cap".
• Adding a wildcard symbol may retrieve word variants: ((hoi chu) or (doi khi)) tinh - hanh tranh cua thong ((cong ban) OR (cong san)) khan cap*.