Perhaps you should try some spelling variations:
duong manh » duong van
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
manh toan » thanh toan, anh tuan, tinh toan
cua dung » cua dong, qua dung, cua rung
cua dang » cua cong, cua ban
toan ban » van ban

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 tinh ((cua dung) OR (cua dang)) duong manh toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh tinh ((cua dung) OR (cua dang)) duong manh toan ban*".