Perhaps you should try some spelling variations:
chon chinh » cho chinh, thon chinh, chinh chinh
giang van » hoang van, dang van, gian dan
anh tang » anh bang, anh dang, anh nang
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
gian nan » gian dan, gian lan, gian van
tang va » trang va, tang van, thang va

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 sach - anh tang va nhung ((cong dan) OR (cong san)) ((gian nan) or (giang van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chon chinh sach - anh tang va nhung ((cong dan) OR (cong san)) ((gian nan) OR (giang van)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "chon chinh sach - anh tang va nhung ((cong dan) OR (cong san)) ((gian nan) or (giang van))".
• Adding a wildcard symbol may retrieve word variants: chon chinh sach - anh tang va nhung ((cong dan) OR (cong san)) ((gian nan) or (giang van))*.