The document has an example: https://laravel.com/docs/5.3/...
As follows:

$users = DB::table('users')
                ->where('name', 'like', 'T%')
                ->get();

Question 1:
The above example only searches for one field name. If I have an articles table with two fields title and content that need fuzzy search, how should I write it?

$keywords= $request->input('keywords');
$articles = DB::table('articles')
                ->where('content', 'like', $keywords.'%') //这一句里面不止content，而是title和content两个字段
                ->get();

Question 2:
Are there any other settings or operations required to search for Chinese?