Perhaps you should try some spelling variations:
hieu truong » hieu tuong, vien truong, bieu tuong
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
hieu tong » hieu tuong, bieu tuong, lieu thong
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cao » chan cho, chat cao, chay cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) or (chinh sach)) - thanh trung ((hieu tong) OR (hieu truong)) cong dan chan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chinh sach)) - thanh trung ((hieu tong) OR (hieu truong)) cong dan chan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chinh sach)) - thanh trung ((hieu tong) OR (hieu truong)) cong dan chan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chinh sach)) - thanh trung ((hieu tong) OR (hieu truong)) cong dan chan cao*.