Perhaps you should try some spelling variations:
tinh tranh » tinh thanh, tinh trang, trinh trang
tranh luan » trinh luan, trinh luat, doanh luan
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
luan nang » luan van, van nang, luan san
nang cong » nang song, dang cong, bang cong
toan ban » van ban

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) or (theo tieu)) xanh - tinh tranh luan nang cong thanh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (theo tieu)) xanh - tinh tranh luan nang cong thanh toan ban*.