Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
toc chieu » toc thieu, doc hieu, hoc thieu
trung cua » truong cua, trung tuan, trung cap
cong manh » duong manh, cong thanh, hoang manh
cong danh » cuong danh, cong dan, cong thanh
tang cua » mang cua, hang cua, tang luan
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: toc chieu xanh - hanh ((trung cua) OR (tang cua)) nhung ((cong manh) OR (cong danh)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc chieu xanh - hanh ((trung cua) or (tang cua)) nhung ((cong manh) OR (cong danh)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: toc chieu xanh - hanh ((trung cua) or (tang cua)) nhung ((cong manh) OR (cong danh)) toan cau*.