Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
doi chieu » doi chi, ho chieu, mot chieu
dang cong » dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
dan toan » van toan, dan than, manh toan
toan ban » van ban
cong va » dong va, cong ha, cong tac

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) or (doc hieu)) xanh - thanh cong va ((nhung cong) or (dang cong)) dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) xanh - thanh cong va ((nhung cong) OR (dang cong)) dan toan ban.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doc hieu)) xanh - thanh cong va ((nhung cong) or (dang cong)) dan toan ban*.