Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thieu tinh » trieu tinh, chieu tinh, thien tinh
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
bang song » nang song
manh cua » doanh cua, ban cua
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan tap

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: hoc thieu tinh - canh manh cua ((nhung cong) OR (bang song)) van toan cao~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - canh manh cua ((nhung cong) or (bang song)) van toan cao*.