Perhaps you should try some spelling variations:
cong cong » cong dong, trong cong, dang cong
dung cong » dung trong
quyen va » quyen van, luyen va, quyen vo
trac chu » tran chau, truc chua, tac cho
cac chu » cac thu, cac che, cac khu
ban le » ban ve
o thi » do thi, vo thi, lo thi
le o » le co, le bo, ke o

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

• Performing a fuzzy search may retrieve terms with similar spellings: quyen va ((trac chu) or (cac chu)) đe co ban le o thi ((cong cong) OR (dung cong))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: quyen va ((trac chu) OR (cac chu)) đe co ban le o thi ((cong cong) OR (dung cong)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "quyen va ((trac chu) or (cac chu)) đe co ban le o thi ((cong cong) OR (dung cong))".
• Adding a wildcard symbol may retrieve word variants: quyen va ((trac chu) or (cac chu)) đe co ban le o thi ((cong cong) OR (dung cong))*.