Perhaps you should try some spelling variations:
duong manh » duong van
cong duong » cuong duong, cong dong, con duong
luan cong » luat cong, luong cong, luan chung
hanh dung » thanh dung, anh dung, hanh dong
manh toan » thanh toan, anh tuan, tinh toan
toan cao » toan ban, toan tap
chu van » cuu van, chu han

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

• Performing a fuzzy search may retrieve terms with similar spellings: cho ((ho manh) or (chu van)) - hanh dung luan cong duong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cho ((ho manh) OR (chu van)) - hanh dung luan cong duong manh toan cao.
• Adding a wildcard symbol may retrieve word variants: cho ((ho manh) or (chu van)) - hanh dung luan cong duong manh toan cao*.