Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
trinh han » trinh quan
han trong » hanh trong, nhan trong, phan trong
cac toan » hach toan, cac thanh, cac doanh
han cua » hang cua, nhan cua, than cua
cua han » cua hang, cua nhan, cua phan

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 tinh)) - trinh han cua han trong ((cac toan) OR (cac khoan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu tinh)) - trinh han cua han trong ((cac toan) OR (cac khoan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (chieu tinh)) - trinh han cua han trong ((cac toan) OR (cac khoan)) cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chieu tinh)) - trinh han cua han trong ((cac toan) OR (cac khoan)) cao*.