Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, ho chieu
manh toan » thanh toan, anh tuan, tinh toan
dung sai » dung tai, dung va, dung dat
toan ban » van ban
dung ai » dung tai, dung hai, dung bai

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 - thanh ((dung ai) OR (dung sai)) ((nhung cong) or (thong cong)) manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - thanh ((dung ai) OR (dung sai)) ((nhung cong) OR (thong cong)) manh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - thanh ((dung ai) OR (dung sai)) ((nhung cong) or (thong cong)) manh toan ban".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - thanh ((dung ai) OR (dung sai)) ((nhung cong) or (thong cong)) manh toan ban*.