Perhaps you should try some spelling variations:
phung cong » nhung cong, phong cong, nhung chong
luan phung » luan phuong, luan chung, luan phong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh dong » ha dong
anh dong » anh huong, anh son
anh dung » anh huong, sach dung, ung dung
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan tap » toan 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 - ((((hanh dong) or (anh dong))) or (anh dung)) luan phung cong san toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - ((((hanh dong) OR (anh dong))) OR (anh dung)) luan phung cong san toan tap.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((((hanh dong) or (anh dong))) or (anh dung)) luan phung cong san toan tap*.