Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
thieu xanh » chieu xanh, hieu manh, thien anh
lanh tranh » canh tranh, lan tranh, hanh trinh
cua phuong » cuu phuong, cuc phuong, luan phuong
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
ban toan » bai toan, ban than, bao toan
van toan » van tuan, van tan, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - lanh tranh cua phuong cong ((ban toan) or (van toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - lanh tranh cua phuong cong ((ban toan) OR (van toan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - lanh tranh cua phuong cong ((ban toan) or (van toan)) cao*.