Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
cua thong » cua thuong, cua khong, cua tong
cong toan » cong tan, cong hoan, cong tuan
toan ban » van ban
phan dau » phan tu, hang dau
can ban » van 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 - ((can ban) or (toan ban)) cua thong cong toan ((phan lap) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - ((can ban) OR (toan ban)) cua thong cong toan ((phan lap) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - ((can ban) or (toan ban)) cua thong cong toan ((phan lap) or (phan dau))*.