Perhaps you should try some spelling variations:
truyen tap » tuyen tap, truyen tai, truyen tam
cong cong » cong dong, trong cong, dung cong
va thuat » ky thuat, va thuc, va thiet
ki thuat » ky thuat
ban ke » ban kem, ban ve, ban le
ho thu » cho thue, hoai thu, hong thu
o thu » o thua, do thu, ro thu

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

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