Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
cong manh » cong danh, duong manh, cong thanh
trung ha » trung hoc, trung tam, trung cap
ha nhung » hoa nhung, hay nhung, pha nhung
toan cao » toan tap
toan ban » van ban
ho lieu » so lieu, ho kieu, ho chieu
co lieu » cot lieu, co hieu, so lieu

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) OR (co lieu)) tinh - thanh trung ha nhung cong manh ((toan cao) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho lieu) or (co lieu)) tinh - thanh trung ha nhung cong manh ((toan cao) OR (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: ((ho lieu) or (co lieu)) tinh - thanh trung ha nhung cong manh ((toan cao) OR (toan ban))*.