Q:

NSMUtableURLRequest requestWithURL returns null whenever URL contains Japanese parameters

Whenever the URL contains Japanese Parameters, requestWithURL function returns null.
urlString = https://translate.google.co.in/#ja/en/はははは
NSMutableURLRequest *Request= [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlString]];

Whenever the Parameters include EN, requestWithURL works fine.

A:

You have to encode your path, since it contains characters not allowed in an URL:
NSString *base = @"https://translate.google.co.in";
NSString *path = @"/#ja/en/はははは";

NSURLComponents *urlComponents = [NSURLComponents componentsWithString:base];
urlComponents.path = path;

NSMutableURLRequest *request= [NSMutableURLRequest requestWithURL:urlComponents.URL];

Note that the request still won't give you the desired result, since in a browser you do a request to https://translate.google.co.in/ with ja/en/はははは as a fragment identifier for JavaScript, while in the code you make an request to https://translate.google.co.in/#..., which doesn't exist.

