Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, nhung don
chua xang » chua nang, chuc nang, chua dong
trung hoc » trung quoc
hang cong » dang cong, hang nong, bang cong
chu bang » thu bang, chuc nang, chu quang
van than » van thanh, van thang, van tuan
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: theo ((chua xang) or (chu bang)) - thanh trung hoc ((nhung cong) OR (hang cong)) van than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua xang) OR (chu bang)) - thanh trung hoc ((nhung cong) OR (hang cong)) van than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chua xang) or (chu bang)) - thanh trung hoc ((nhung cong) OR (hang cong)) van than cap".
• Adding a wildcard symbol may retrieve word variants: theo ((chua xang) or (chu bang)) - thanh trung hoc ((nhung cong) OR (hang cong)) van than cap*.