Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hoc chieu » hoc thieu, ho chieu, hoc hien
tinh nhan » trinh nhan, tinh than, minh nhan
nhan thuc » nhan luc, dan thuc, toan thuc
thuc hung » thuc chung, thuc nhung, thuc dung
cong than » cong thanh, cong thang, cong thai
cong tan » cong tac, cong san, cong thanh
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 chieu sang - tinh nhan thuc hung ((cong than) or (cong tan)) phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - tinh nhan thuc hung ((cong than) OR (cong tan)) phan cac.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - tinh nhan thuc hung ((cong than) or (cong tan)) phan cac*.