Perhaps you should try some spelling variations:
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
cua nhung » va nhung
hoi hieu » hoi phieu, hoi tieu, moi hieu
tung cua » trung cua, tuong cua, dung cua
cong dan » cong san, cong tan, huong dan
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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

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