Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
lieu tinh » trieu tinh, diep tinh, bien tinh
trung va » truong va, trang va, trung tam
trung ha » trung hoc, trung tam, trung cap
cong dan » cong san, cong tan, huong dan
toan cao » toan ban
toan tap » toan ban
ho lieu » so lieu, co lieu, ho kieu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - thanh ((trung va) OR (trung ha)) nhung cong dan ((toan cao) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho lieu tinh - thanh ((trung va) or (trung ha)) nhung cong dan ((toan cao) OR (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - thanh ((trung va) or (trung ha)) nhung cong dan ((toan cao) OR (toan tap))*.