Perhaps you should try some spelling variations:
chon chinh » cho chinh, thon chinh, chinh chinh
chinh sang » chinh dang, chinh rang, chinh sach
luan thung » luan chung, luat thuong, luan phuong
chung tinh » nhung tinh, chung minh, hung tinh
luan hung » luan chung, lan hung, luan ung
anh dung » anh dong, anh huong, sach dung
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: chon chinh sang - anh dung ((luan thung) or (luan hung)) chung tinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chon chinh sang - anh dung ((luan thung) OR (luan hung)) chung tinh toan tap.
• Adding a wildcard symbol may retrieve word variants: chon chinh sang - anh dung ((luan thung) or (luan hung)) chung tinh toan tap*.