Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
chu xanh » chu manh, chua xang, chuc danh
anh tang » anh bang, anh dang, anh nang
va thong » va phuong, he thong, va cong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu xanh) OR (chieu xanh)) - anh tang ((va thong) OR (va thuong)) cong tan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu xanh) or (chieu xanh)) - anh tang ((va thong) OR (va thuong)) cong tan toan cau~".
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) or (chieu xanh)) - anh tang ((va thong) OR (va thuong)) cong tan toan cau*.