Perhaps you should try some spelling variations:
truong cao » truong dai
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
trung cap » trung tam
cong vang » cong lang, cong quang, cong ngang
vang than » sang than, van than, cang thang
than cau » toan cau, phan cau, than cap

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

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