Perhaps you should try some spelling variations:
thien anh » thien danh, tien anh, thien thanh
cua thong » cua thuong, cua khong, cua tong
hien anh » hien hanh, dien anh, tien anh
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
phan tap » phan lap, han tap, pha tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien anh) or (thien anh)) - anh tang cua thong ((cong dan) OR (cong san)) phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien anh) OR (thien anh)) - anh tang cua thong ((cong dan) OR (cong san)) phan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien anh) or (thien anh)) - anh tang cua thong ((cong dan) OR (cong san)) phan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien anh) or (thien anh)) - anh tang cua thong ((cong dan) OR (cong san)) phan tap*.