Google does NOT index our muti-language Link

Currently Google and most search engine are NOT index our muti-language site but English version indexed very well in most search engine. we are look for some one has solid experience about this issue. Indexed > [login to view URL] Not index > [login to view URL] it seems if the URL has the language level Google will not index The job just need to provide us a solution to our programmers (the solution must be workable with our site and not losing any current site functionality or URL structure ). the solution DOC must be provided within 2days after the job award and once updated must work withing 15days.(most search engines scan our site around 3~5 days) otherwise the project will see as failed and full payment will not be issued. Please ask all questions and any material you need to done the job before you bid and DO NOT place the bidding If you are not sure the solution.