Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
vuong van » duong van, luong van, muong van
dan toan » van toan, dan than, manh toan
toan ban » van 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 - hoang vuong van ((nhung cong) or (thong cong)) dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hoang vuong van ((nhung cong) OR (thong cong)) dan toan ban.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hoang vuong van ((nhung cong) or (thong cong)) dan toan ban*.