Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trang » thanh trung, hanh trinh, minh trang
doi chieu » doc hieu, doi chi, ho chieu
song danh » song hanh, cong danh, song xanh
danh toan » manh toan, anh toan, dan toan
kha nang » phap nang, ky nang, ki nang
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 chieu sang - ((hanh trang) or (canh tranh)) kha nang song danh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - ((hanh trang) OR (canh tranh)) kha nang song danh toan cau*.