Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
canh manh » canh tranh, cach mang, van manh
lanh manh » lanh tranh, lan anh, van manh
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan tap » toan ban

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 xanh - ((canh manh) or (lanh manh)) va nhung cong san toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - ((canh manh) OR (lanh manh)) va nhung cong san toan tap.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - ((canh manh) or (lanh manh)) va nhung cong san toan tap*.