Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh trang » canh tranh, hanh trinh, minh trang
hoc nhieu » hoc thieu, hoc nhiet, hoc nghien
hop nhieu » hoc thieu, ho chieu, he nhieu
dung cong » dung trong
qua dung » quang dung, su dung, qua song
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than man » than ma, thanh san, tran manh

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) or (hop nhieu)) tang - ((hanh trang) OR (thanh trung)) qua dung cong dan than man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc nhieu) OR (hop nhieu)) tang - ((hanh trang) OR (thanh trung)) qua dung cong dan than man.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc nhieu) or (hop nhieu)) tang - ((hanh trang) OR (thanh trung)) qua dung cong dan than man".
• Adding a wildcard symbol may retrieve word variants: ((hoc nhieu) or (hop nhieu)) tang - ((hanh trang) OR (thanh trung)) qua dung cong dan than man*.