Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
hieu lang » chieu sang, nhieu tang, hieu van
hanh luan » khanh luan, hang luan, hanh luat
hang cong » dang cong, hang nong, bang cong
van hang » van khang, van hoang, van thang
van toan » van tuan, van tan, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi ((hieu lang) or (hieu quang)) - hanh luan van hang cong ((van toan) or (van ban)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi ((hieu lang) OR (hieu quang)) - hanh luan van hang cong ((van toan) OR (van ban)) cau.
• Adding a wildcard symbol may retrieve word variants: hoi ((hieu lang) or (hieu quang)) - hanh luan van hang cong ((van toan) or (van ban)) cau*.