Perhaps you should try some spelling variations:
thanh tung » thanh cong
hieu lang » chieu sang, hieu quang, nhieu tang
cua trong » cua truong, cua trung, qua trong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - ((thanh trung) OR (thanh tung)) cua trong cong dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - ((thanh trung) OR (thanh tung)) cua trong cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((thanh trung) OR (thanh tung)) cua trong cong dan toan cao*.