Perhaps you should try some spelling variations:
tranh quang » tran quang, trinh quang, trinh quan
hieu quang » thieu quang, hieu quan, hieu qua
nhung cong » dung cong, thong cong, hang cong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap
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 quang - hanh ((trinh dung) or (((tranh quang) OR (tinh quang)))) nhung cong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu quang - hanh ((trinh dung) OR (((tranh quang) OR (tinh quang)))) nhung cong dan than tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu quang - hanh ((trinh dung) or (((tranh quang) OR (tinh quang)))) nhung cong dan than tap".
• Adding a wildcard symbol may retrieve word variants: ho hieu quang - hanh ((trinh dung) or (((tranh quang) OR (tinh quang)))) nhung cong dan than tap*.