Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » canh tranh, hanh trinh, hanh trang
cua phuong » cuu phuong, cuc phuong, luan phuong
dong tan » duong tan, dong tai, dong san
tan toan » tan tran, tap toan, van toan
toan cau » 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: toc thieu xanh - hanh tranh ((cua cong) OR (cua phuong)) dong tan toan cau~.
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - hanh tranh ((cua cong) or (cua phuong)) dong tan toan cau*.