Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh tra, thanh tuan
thanh toan » thanh hoa, thanh san, tinh toan
nhung cong » dung cong, thong cong, hang cong
nhu phuong » thu phuong, nhung phuong, thi phuong
hoc chinh » hoan chinh, hoc sinh, hoc kinh
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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

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