Perhaps you should try some spelling variations:
nhiet nang » nhiet dong, viet nang, nhieu tang
thanh tung » thanh cong
tong cong » trong cong, cong cong, dung cong
tung cua » trung cua, tuong cua, dung cua
cua tong » cua cong, cua dong, cua nong
dan phan » doan phan, van phan, dam phan
dan chan » dan gian, dan ca, van chat

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 (nhiet nang)) - thanh tung cua tong cong ((dan phan) OR (dan chan)) cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chinh sach) OR (nhiet nang)) - thanh tung cua tong cong ((dan phan) OR (dan chan)) cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chinh sach) or (nhiet nang)) - thanh tung cua tong cong ((dan phan) OR (dan chan)) cac".
• Adding a wildcard symbol may retrieve word variants: theo ((chinh sach) or (nhiet nang)) - thanh tung cua tong cong ((dan phan) OR (dan chan)) cac*.