Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban
mang va » mang vua, bang va, dang va

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - nhanh ((mang va) or (hang va)) nhung cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - nhanh ((mang va) OR (hang va)) nhung cong dan toan ban*.