Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu lang » thieu khang, thieu quang, chieu sang
cap truong » cac truong, cao truong, cau truong
lap truong » cac truong, xa truong, tai truong
hieu lang » chieu sang, hieu quang, nhieu tang
cong san » cong tac
san than » sang than, san thanh, ban 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: hoc ((thieu lang) or (hieu lang)) - thanh trung ((cap truong) OR (lap truong)) cong san than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu lang) OR (hieu lang)) - thanh trung ((cap truong) OR (lap truong)) cong san than cap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu lang) or (hieu lang)) - thanh trung ((cap truong) OR (lap truong)) cong san than cap*".