Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
chi thanh » chi nhanh, thi thanh, cho thanh
hanh hang » thanh hang, hang hang, hanh han
va phuong » va thuong, cac phuong
manh toan » thanh toan, anh tuan, tinh toan
thi hanh » thi thanh
dan toan » van toan, dan than, xuan toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((thi hanh) or (chi thanh)) - hanh hang va phuong cong ((dan toan) or (manh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((thi hanh) OR (chi thanh)) - hanh hang va phuong cong ((dan toan) OR (manh toan)) cao.
• Adding a wildcard symbol may retrieve word variants: doi ((thi hanh) or (chi thanh)) - hanh hang va phuong cong ((dan toan) or (manh toan)) cao*.