Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
phap thong » phap phong, phap chong, pho thong
hieu lang » chieu sang, hieu quang, nhieu tang
cap thong » cap tong, chap thuong, chap phong
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (hieu lang)) - thanh tung ((cap thong) OR (phap thong)) cong dan phan tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) or (hieu lang)) - thanh tung ((cap thong) OR (phap thong)) cong dan phan tu~".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (hieu lang)) - thanh tung ((cap thong) OR (phap thong)) cong dan phan tu*.