Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
hanh thang » nhanh thang, thanh thang, danh thang
hanh trang » thanh trung, canh tranh, hanh trinh
tieu xanh » tieu danh, chieu xanh, dieu hanh
va phuong » va thuong, cac phuong
cong van » cong vang, cong san, song van
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.

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - ((hanh thang) or (hanh trang)) va phuong cong van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((hanh thang) OR (hanh trang)) va phuong cong van toan cao*.