Perhaps you should try some spelling variations:
thanh mang » thanh hang, hanh mang, nhanh mang
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
dang cong » dung cong
mang cua » manh cua, dung cua, ban cua
cua dang » cua cong, cua ban
dan toan » van toan, dan than, manh toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - thanh mang cua dang cong ((dan toan) or (tinh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - thanh mang cua dang cong ((dan toan) OR (tinh toan)) cao*.