Perhaps you should try some spelling variations:
quang dung » quang trung, ung dung, cuong dung
nhieu tang » chieu sang, hieu lang, nhiet nang
hoc nhieu » hoc thieu, hoc nhiet, hop nhieu
hanh tang » hanh trang, anh tang, hanh mang
qua dung » qua song, qua cong, duc dung
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc nhieu tang - hanh tang ((((qua dung) OR (su dung))) or (quang dung)) cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nhieu tang - hanh tang ((((qua dung) OR (su dung))) OR (quang dung)) cong dan than ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc nhieu tang - hanh tang ((((qua dung) OR (su dung))) or (quang dung)) cong dan than ban".
• Adding a wildcard symbol may retrieve word variants: hoc nhieu tang - hanh tang ((((qua dung) OR (su dung))) or (quang dung)) cong dan than ban*.