Perhaps you should try some spelling variations:
nhanh bang » nhanh lang, nhanh mang, nhanh quang
hieu lang » chieu sang, hieu quang, nhieu tang
viet dung » viet hung, viet huong, viet trung
va duong » van duong, va tuong, va huong
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - nhanh bang ((((viet dung) or (va duong))) or (xay dung)) cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - nhanh bang ((((viet dung) OR (va duong))) OR (xay dung)) cong san toan ban.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - nhanh bang ((((viet dung) or (va duong))) or (xay dung)) cong san toan ban*.