Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
thuc phung » thuc chung, thuc nhung, thu phuong
phung cong » nhung cong, phong cong, nhung chong
thanh pham » thanh phan, thanh pho, thanh hai
toan thuc » toan hoc, dan thuc, nhan thuc
than phan » thanh phan, toan phan, thanh nhan

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