Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
tung bay » vung bay, tuong ban, tung dan
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
tung ap » tang ap, tung dan, tung mai

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 - thanh ((tung ap) OR (tung bay)) dung cong dan than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - thanh ((tung ap) OR (tung bay)) dung cong dan than cau".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - thanh ((tung ap) OR (tung bay)) dung cong dan than cau*.