Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
thuc cung » thuc chung, thuc vung, tuc cung
thuc dung » thuoc dung, thuy dung, tuc dung
cong toan » cong tan, cong hoan, cong tuan
toan phan » thanh phan, toan ban, hoa phan
phan lap » phan dau
tinh am » tinh nam, tinh cam, tinh amin

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) or (chieu sach)) - tinh am ((thuc cung) OR (thuc dung)) cong toan phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sach)) - tinh am ((thuc cung) OR (thuc dung)) cong toan phan lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chieu sach)) - tinh am ((thuc cung) OR (thuc dung)) cong toan phan lap".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sach)) - tinh am ((thuc cung) OR (thuc dung)) cong toan phan lap*.