Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
khong tang » khong cang, khong thanh, khong trong
trung cua » truong cua, trung cap, dung cua
cua tinh » va tinh, ha tinh, hoa tinh
cua sinh » hoa sinh, va sinh
tang dan » tang van, tung dan, tang luan
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((cua tinh) OR (cua sinh)) - thanh ((trung cua) or (trung tuan)) khong tang dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((cua tinh) OR (cua sinh)) - thanh ((trung cua) OR (trung tuan)) khong tang dan than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((cua tinh) OR (cua sinh)) - thanh ((trung cua) or (trung tuan)) khong tang dan than cap".
• Adding a wildcard symbol may retrieve word variants: ho ((cua tinh) OR (cua sinh)) - thanh ((trung cua) or (trung tuan)) khong tang dan than cap*.