Query builder do not return correct values

I am using laravel 5.0 to create a news site with multi-language, i try to load articles from multiples categories and with distinct number of articles (4 for first section, 3 for second), the problems is typing a call for each category would make the code too long.

here is the code

    //getting the categories for "noticias"
    $news_cat = Category::whereHas('slugs',function($slugs){
        $slugs->where('text','LIKE','%noticias%');
    })
    ->first();
    //getting the categories for "circulos-de-cooperación"
    $circles_cat = Category::whereHas('slugs',function($slugs){
        $slugs->where('text','LIKE','%circulos-de-cooperación%');
    })
    ->first();


    //creating the default query with common info.
    $articles = Article::with(['titles' => function($titles) use($lang){
        $titles->where('lang_id','=',$lang->id);
    }])
    ->with(['descriptions' => function($descriptions) use($lang){
        $descriptions->where('lang_id','=',$lang->id);
    }])
    ->with(['slugs' => function($slugs) use($lang){
        $slugs->where('lang_id','=',$lang->id);
    }])
    ->with('images');


    //getting the articles where has the selected category (this return the correct values)
    $news = $articles->where('cat_id','=',$news_cat->id)
    ->take(4)
    ->get();


    //getting the articles where has the selected category (this return [])
    $circles = $articles->where('cat_id','=',$circles_cat->id)
    ->take(3)
    ->get();

I am new using laravel 5.0, but i have used larave 4.2, and in laravel 4.2 i could do this without problem, if i make the whole call without sectioning, it return the correct value in the second call.

how can i solve this problem?

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