Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
doi chieu » doc hieu, doi chi, mot chieu
tranh cua » doanh cua, manh cua
bang cong » bang song, hang cong, dung cong
dang cong » dung cong
ho chieu » theo chieu, hoc thieu, mot chieu
van khan » van khanh, van khang, van phan
khan cap » khan ap, than cap, khoan cam

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) tinh - hanh tranh cua ((bang cong) OR (dang cong)) van khan cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) tinh - hanh tranh cua ((bang cong) or (dang cong)) van khan cap~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) tinh - hanh tranh cua ((bang cong) or (dang cong)) van khan cap*.