Perhaps you should try some spelling variations:
hien manh » hien hanh, hieu manh, hien nhanh
tien manh » tien anh, tien thanh, tieng anh
tranh hoa » thanh hoa, trinh hoa, tranh ha
vang song » nang song, bang song, vung song
song doan » cong doan, long doan, song don
doan phan » doanh phan, toan phan, dan phan
hoa vang » hoa lang, hoa van, hoa nang
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien manh) OR (tien manh)) - canh tranh hoa vang song doan phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien manh) OR (tien manh)) - canh tranh hoa vang song doan phan cau*".