Perhaps you should try some spelling variations:
thanh tung » thanh cong
hieu lang » chieu sang, hieu quang, nhieu tang
cong dang » cong dong, cong dung, cong danh
tung hai » trung hai, dung hai, hung hai
hai dang » hai bang, dai dang, hoi dang
cong dan » cong san, cong tan, huong dan
toan cao » toan ban, toan tap
he hieu » he nhieu, he dieu, de hieu

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

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