The Family Strikes Back（烏龍大家庭） 

type the film;s chinese name with shasha(the website on where we can watch this film) in the google search bar, then there ya go!

a moment ago, i just typed the film's chinese name on google, and there i found the whole version in cantonese.

the website's name is called shasha. you can include it after the film's name in the search bar and there you go. hope you can find it and enjoy!