Perhaps you should try some spelling variations:
luyen tap » tuyen tap, luyen thi
cach tieu » sach thieu, cach bien, cach tu
cac chu » cac thu, cac che, cac khu
ca chu » cua chu, ca chua, can chu
ban ve » ban va
ky ve » ly ve, ky le, ky va
ke ve » ke va, ke he, de ve
dong* » dung*

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

• Performing a fuzzy search may retrieve terms with similar spellings: luyen tap ((((cac chu) or (ca chu))) or (cach tieu)) đe co ban ve ((ky ve) OR (ke ve)) cong dong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: luyen tap ((((cac chu) OR (ca chu))) OR (cach tieu)) đe co ban ve ((ky ve) OR (ke ve)) cong dong*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "luyen tap ((((cac chu) or (ca chu))) or (cach tieu)) đe co ban ve ((ky ve) OR (ke ve)) cong dong*".