Perhaps you should try some spelling variations:
cong cong » cong dong, trong cong, dang cong
dung cong » dung trong
cac chu » cac thu, cac khu, ca chu
cac che » cac he, cac chien, cac chat
ban van » ban dan, ban va, tan van
ty thuc » ty thuoc, tu thuc, y thuc
van ty » van ky, van tu, van te
tuyen » truyen, quyen

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

• Performing a fuzzy search may retrieve terms with similar spellings: tuyen tap ((cac chu) or (cac che)) đe co ban van ty thuc ((cong cong) or (dung cong))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tuyen tap ((cac chu) OR (cac che)) đe co ban van ty thuc ((cong cong) OR (dung cong)).
• Adding a wildcard symbol may retrieve word variants: tuyen tap ((cac chu) or (cac che)) đe co ban van ty thuc ((cong cong) or (dung cong))*.