Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thien danh » thien anh, thien dang, thien thanh
cong thang » cong thanh, cang thang, cong thong
thang phan » thanh phan, thong phan, than phan
toan thuc » toan hoc, dan thuc, nhan thuc
thuc hung » thuc chung, thuc nhung, thuc dung
hung cong » nhung cong, hung cuong, phung cong
phan lap » phan dau

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (thien danh)) - tinh toan thuc hung cong thang phan lap~.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (thien danh)) - tinh toan thuc hung cong thang phan lap*.