Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thuc chung » thuc cung, thuc nhung, thung chung
chung cong » nhung cong, chong cong, phung cong
thieu anh » thien anh, thien danh, thieu nhi
toan thuc » toan hoc, dan thuc, nhan thuc
cong than » cong thanh, cong thang, cong tan
than phan » thanh phan, toan phan, thanh pham
phan cac » nhan cach, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu anh) or (chieu xanh)) - tinh toan thuc chung cong than phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu anh) OR (chieu xanh)) - tinh toan thuc chung cong than phan cac.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu anh) or (chieu xanh)) - tinh toan thuc chung cong than phan cac*.