Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
tung dan » dung dan, huong dan, trung dai
dan dung » van dung, tin dung, ap dung
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu lang) or (chieu xanh)) - thanh tung dan dung cong manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu lang) OR (chieu xanh)) - thanh tung dan dung cong manh toan cau.
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) or (chieu xanh)) - thanh tung dan dung cong manh toan cau*.