Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hien nhanh » hien hanh, thien thanh, tien thanh
hung cong » nhung cong, hung cuong, phung cong
cong toan » cong tan, cong hoan, cong tuan
toan hoc » toan khoa, van hoc, hoa hoc
hoc hung » hoc huong, hoc nhung, hoc ung
phan cac » nhan cach, phan dau, phan van
phan lap » phan 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 sang) or (hien nhanh)) - tinh toan hoc hung cong toan ((phan cac) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (hien nhanh)) - tinh toan hoc hung cong toan ((phan cac) OR (phan lap)).
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (hien nhanh)) - tinh toan hoc hung cong toan ((phan cac) or (phan lap))*.