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

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