Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
thong cong » trong cong, tong cong, thong thong
chinh he » chinh che, hinh he, chinh ke
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) OR (chieu tinh)) - hanh chinh he thong cong tan phan tu~".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) OR (chieu tinh)) - hanh chinh he thong cong tan phan tu*.