Perhaps you should try some spelling variations:
thanh trung » thanh tung
viet nang » viet hoang, viet trang, viet nam
trung cua » truong cua, trung tuan, trung cap
cua trong » cua truong, cua trung, qua trong
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cac » nhan cach, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chinh sach) or (viet nang)) - thanh trung cua trong cong dan phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chinh sach) OR (viet nang)) - thanh trung cua trong cong dan phan cac.
• Adding a wildcard symbol may retrieve word variants: theo ((chinh sach) or (viet nang)) - thanh trung cua trong cong dan phan cac*.