Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
hoc tang » hoc tan, hoc tieng, hoc trong
hoc bang » hoc bong, hoc dan, hoc bai
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
ho hieu » ho chieu, hoi hieu, nho hieu

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 - canh tranh ((hoc tang) OR (hoc bang)) cong dan than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - canh tranh ((hoc tang) OR (hoc bang)) cong dan than cau".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - canh tranh ((hoc tang) OR (hoc bang)) cong dan than cau*.