Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu lang » chieu sang, hieu quang, nhieu tang
luat dung » suat dung, luat chung, luat quang
dung cong » dung trong
manh toan » thanh toan, anh tuan, tinh toan
nhu hieu » nhu hien, nha hieu, nho hieu
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: nhu hieu lang - hanh trinh luat dung cong ((dan toan) or (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nhu hieu lang - hanh trinh luat dung cong ((dan toan) OR (manh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: nhu hieu lang - hanh trinh luat dung cong ((dan toan) or (manh toan)) cau*.