Perhaps you should try some spelling variations:
truong cao » truong dai
trung tuan » trung thanh, trung tam, tran tuan
khong tang » khong cang, khong thanh, khong trong
lieu tinh » trieu tinh, diep tinh, bien tinh
tang luan » dung luan
luan than » luan thanh, luan phan, luan han
than cau » toan cau, phan cau, than cap
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 ((truong cao) OR (trung tuan)) khong tang luan than cau~.
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - thanh ((truong cao) or (trung tuan)) khong tang luan than cau*.