Perhaps you should try some spelling variations:
thanh trung » thanh tung
phuong cong » phuong dong, phong cong, phung cong
chieu sang » chieu sach, chieu xanh, hieu lang
chiet tach » chieu sach
va phuong » va thuong, cac phuong
trung va » truong va, trang va, trung ha
cong dan » cong san, cong tan, huong dan
chan cao » chan cho, chat cao, toan cao
chay cao » cay cao, chat cao, nha cao

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

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