Perhaps you should try some spelling variations:
thanh phang » thanh hang, thanh thang, thanh phuong
thanh phan » thanh pho, thanh san, thanh toan
nhung cong » dung cong, thong cong, nhung don
hang cong » dang cong, hang nong, bang cong
do chinh » hoc chinh, mo hinh, do dinh
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: do chinh sach - ((thanh phang) or (thanh phan)) cua ((nhung cong) OR (hang cong)) dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: do chinh sach - ((thanh phang) OR (thanh phan)) cua ((nhung cong) OR (hang cong)) dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "do chinh sach - ((thanh phang) or (thanh phan)) cua ((nhung cong) OR (hang cong)) dan toan ban".
• Adding a wildcard symbol may retrieve word variants: do chinh sach - ((thanh phang) or (thanh phan)) cua ((nhung cong) OR (hang cong)) dan toan ban*.