Perhaps you should try some spelling variations:
chieu lang » chieu sang, hieu lang, chi lang
quan trong » gian trong
doi chieu » doc hieu, doi chi, mot chieu
lang vang » lang vong, lang thang, dang van
lang van » dang van, tang van, hoang van
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu lang - ((lang van) or (lang vang)) quan trong cong dan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu lang - ((lang van) OR (lang vang)) quan trong cong dan phan tu*.