Perhaps you should try some spelling variations:
mot chieu » ho chieu
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
canh dan » canh van, sanh dan, thanh dan
cong van » cong vang, cong san, song van
van phan » van phong, van thanh, luan phan
can van » cac van, can ban, tan van
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (doi chieu)) xanh - ((canh dan) or (can van)) va dung cong van phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doi chieu)) xanh - ((canh dan) OR (can van)) va dung cong van phan tu.
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (doi chieu)) xanh - ((canh dan) or (can van)) va dung cong van phan tu*.