Perhaps you should try some spelling variations:
thanh trung » thanh tung
luan nhung » luan chung, luan hung, quan nhung
hanh tang » hanh trang, anh tang, hanh mang
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan tap » toan ban
cao cho » cap cho, cao chat
cho van » chao van, chon van, cho vay

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

• Performing a fuzzy search may retrieve terms with similar spellings: cao cho van - ((hanh tang) or (thanh trung)) luan nhung ((cong dan) OR (cong tan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cao cho van - ((hanh tang) OR (thanh trung)) luan nhung ((cong dan) OR (cong tan)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cao cho van - ((hanh tang) or (thanh trung)) luan nhung ((cong dan) OR (cong tan)) toan tap".
• Adding a wildcard symbol may retrieve word variants: cao cho van - ((hanh tang) or (thanh trung)) luan nhung ((cong dan) OR (cong tan)) toan tap*.