Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
nhung cong » dung cong, thong cong, hang cong
cong quang » luong quang, thong quang, duong quang
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
than cau » phan cau, than cap, thanh chau
toan cau » 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: ho ((chiet tach) or (chinh sach)) - thanh trung cua nhung cong quang ((than cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chiet tach) OR (chinh sach)) - thanh trung cua nhung cong quang ((than cau) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: ho ((chiet tach) or (chinh sach)) - thanh trung cua nhung cong quang ((than cau) or (toan cau))*.