Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
nhan dang » nhan dan, phan dang, tran dang
tong cong » cong cong, dung cong, dang cong
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
dang va » dang van, dang vat, hang va

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 - nhan dang va ((trong cong) or (tong cong)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - nhan dang va ((trong cong) OR (tong cong)) dan toan cao.
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - nhan dang va ((trong cong) or (tong cong)) dan toan cao*.