Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
chiet tach » chieu sach
thong cong » trong cong, tong cong, thong thong
nhan dang » nhan dan, phan dang, tran dang
van thong » van thuong, van phong, va thong
cong manh » cong danh, duong manh, cong thanh
dang van » hoang van, hang va
toan cau » toan cao, toan tap, toan tai
toan 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: theo ((chieu xanh) or (chiet tach)) - nhan dang van thong cong manh ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chiet tach)) - nhan dang van thong cong manh ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chiet tach)) - nhan dang van thong cong manh ((toan cau) or (toan ban))*.