Perhaps you should try some spelling variations:
ngung cong » nhung cong, dung cong, nganh cong
hieu sang » chieu sang, hieu lang, hieu quang
sinh chat » tinh chat, dinh chat, trinh chat
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu sang - nhan sinh chat ngung cong dan toan ban~.
• Adding a wildcard symbol may retrieve word variants: doc hieu sang - nhan sinh chat ngung cong dan toan ban*.