Search university language department websites for proposals and problem statements developed by the faculty at the university. Many universities will have documents and published sources open for the public. Use a general search engine using key words such as "language departments" to guide you to universities' websites.
Contact university language departments through their websites. They will often have an email or phone number to contact for more information. This step will be necessary if the university has not published proposals or problem statements online, which you can access. The department will be able to direct you to the correct contact or place to find more problem statements.
Consult a librarian at your local or university library. They can assist you with advanced searches on their library's website to look for books and articles on problem statements regarding learning English. They can also direct you to the correct section of the library devoted to research on learning English.