Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
chu tinh » chau tinh, chua tinh, cuu tinh
cong san » cong tac
than cao » thai cao, than cap, than sao
toan cao » toan ban, toan tap
ho chu » hoi chu, cho chu, ho chua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chu tinh - ((hanh chinh) or (thanh trung)) va nhung cong san ((than cao) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chu tinh - ((hanh chinh) OR (thanh trung)) va nhung cong san ((than cao) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chu tinh - ((hanh chinh) or (thanh trung)) va nhung cong san ((than cao) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: ho chu tinh - ((hanh chinh) or (thanh trung)) va nhung cong san ((than cao) OR (toan cao))*.