Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hien anh » hien hanh, thien anh, dien anh
trung va » truong va, trung ha, trung tam
trang va » tran van, hang va
cong dan » cong san, cong tan, huong dan
toan cao » toan ban
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: hoc hien anh - thanh ((trung va) OR (trang va)) nhung cong dan ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien anh - thanh ((trung va) OR (trang va)) nhung cong dan ((toan cao) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien anh - thanh ((trung va) OR (trang va)) nhung cong dan ((toan cao) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: hoc hien anh - thanh ((trung va) OR (trang va)) nhung cong dan ((toan cao) or (toan tap))*.