Perhaps you should try some spelling variations:
trung thanh » truong thanh
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
dung cong » dung trong
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: theo chieu sang - thanh ((trung tam) or (trung thanh)) dung cong dan chan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - thanh ((trung tam) OR (trung thanh)) dung cong dan chan cao.
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - thanh ((trung tam) or (trung thanh)) dung cong dan chan cao*.