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
dung cong » dung trong
van nhanh » van thanh, van hanh, van khanh
nhanh cay » nhanh ha, nhanh bac, nhanh va
ho chieu » hoc thieu, doi chieu, mot chieu
cua dung » cua dang, cua dong, qua dung
cong van » cong vang, cong san, song 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 dung cong 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 dung cong van nhanh cay.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) tinh - hanh tranh cua dung cong van nhanh cay*.