Perhaps you should try some spelling variations:
hien sang » hien trang, khien bang, chieu sang
dang cong » dung cong
chinh ta » chinh tai, chinh va, chinh tri
cong san » cong tac
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau
ta dang » da dang, ga dang, ha dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien sang - hanh chinh ta dang cong san ((phan cau) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sang - hanh chinh ta dang cong san ((phan cau) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: hoc hien sang - hanh chinh ta dang cong san ((phan cau) or (phan dau))*.