Perhaps you should try some spelling variations:
danh tranh » canh tranh, danh thanh, lanh tranh
cao nhanh » cao nhan, cach nhanh, khao nhanh
chong khi » khong khi, cong khi, chong hiv
tac danh » sach danh, cac doanh, cac dan
chong vi » chung vi, chon vi, chong va
tranh o » tranh co, trang o, trinh o
te cao » te bao
o khi » co khi, bo khi

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: (( tac danh tranh o khi đong luc ) OR ( te cao nhanh ((chong khi) OR (chong vi)) đong luc ))~.
• Adding a wildcard symbol may retrieve word variants: (( tac danh tranh o khi đong luc ) or ( te cao nhanh ((chong khi) or (chong vi)) đong luc ))*.