Can you help me please?
Yes I can help, but can you explain further to what exactly is happening? What is a filter you are trying to create?
I have different labels for each task, and i can't filter the tasks by label ( for example calls, meetings, etc)
You can enter @label1 into the search box by itself, or you can create a filter for @label1 & @label2 for example. http://todoist.com/Help/Filtering