Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cuong tap » luong tap, cong tac, luong tai
cua dung » cua dong, qua dung, cua rung
cua dang » cua cong, cua ban
tap toan » tap doan, tap quan, bai toan
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: theo ((chieu xanh) OR (chieu sang)) - hanh tinh ((cua dung) or (cua dang)) cuong tap toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sang)) - hanh tinh ((cua dung) OR (cua dang)) cuong tap toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) OR (chieu sang)) - hanh tinh ((cua dung) or (cua dang)) cuong tap toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) OR (chieu sang)) - hanh tinh ((cua dung) or (cua dang)) cuong tap toan cao*.