Perhaps you should try some spelling variations:
cuoc chien » cac chien, cuoc chinh, ngoc chien
cong cong » cong dong, trong cong, dang cong
dung cong » dung trong
van tuan » van quan, van ban, anh tuan
ban vat » bang vat, ben vat, ban va
ly te » y te, ly ke, ly ve
tuyen » truyen, quyen

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tuyen tap ((cuoc chien) OR (van tuan)) đe co ban vat ly te ((cong cong) OR (dung cong))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tuyen tap ((cuoc chien) or (van tuan)) đe co ban vat ly te ((cong cong) OR (dung cong))~".
• Adding a wildcard symbol may retrieve word variants: tuyen tap ((cuoc chien) or (van tuan)) đe co ban vat ly te ((cong cong) OR (dung cong))*.