Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
thieu khang » chieu khong
thieu quang » hieu quang, thien quan, trien quang
truong cua » truong ca, truong quan, truong cao
van than » van thanh, van thang, van tuan
than cao » toan cao, thai cao, 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: hoc ((thieu khang) OR (thieu quang)) - thanh truong cua ((thang long) or (thanh cong)) van than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu khang) OR (thieu quang)) - thanh truong cua ((thang long) OR (thanh cong)) van than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu khang) OR (thieu quang)) - thanh truong cua ((thang long) or (thanh cong)) van than cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu khang) OR (thieu quang)) - thanh truong cua ((thang long) or (thanh cong)) van than cao*.