Perhaps you should try some spelling variations:
phuong cong » phuong dong, phung cong, phuong hoang
thanh thang » nhanh thang, thanh thanh, thanh hang
hanh thang » nhanh thang, hanh trang, danh thang
phong cong » phong chong, thong cong, chong cong
tieu xanh » tieu danh, chieu xanh, dieu hanh
van tan » van tuan, van ban, van tai
tan cao » toan cao, tao cao, tay cao

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 (thanh thang)) va ((phuong cong) or (phong cong)) van tan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((hanh thang) OR (thanh thang)) va ((phuong cong) OR (phong cong)) van tan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((hanh thang) OR (thanh thang)) va ((phuong cong) or (phong cong)) van tan cao*".