Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
nhanh cay » nhanh ha, nhanh bac, nhanh va
ho chieu » hoc thieu, doi chieu, mot chieu
cua dang » cua cong, cua ban
cong van » cong vang, cong san, cong tan
song van » hoang van, trong van, duong van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (ho chieu)) tinh - hanh tranh cua dang ((cong van) OR (song van)) nhanh cay~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) tinh - hanh tranh cua dang ((cong van) OR (song van)) nhanh cay.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (ho chieu)) tinh - hanh tranh cua dang ((cong van) OR (song van)) nhanh cay".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) tinh - hanh tranh cua dang ((cong van) OR (song van)) nhanh cay*.