If you try to do something, you want to do it, and you take action which you hope will help you to do it.

To try and do something means to try to do it.

If you try for something, you make an effort to get it or achieve it.

If you try something new or different, you use it, do it, or experience it in order to discover its qualities or effects.

If you try a particular place or person, you go to that place or person because you think that they may be able to provide you with what you want.

If you try a door or window, you try to open it.

When a person is tried, he or she has to appear in a law court and is found innocent or guilty after the judge and jury have heard the evidence. When a legal case is tried, it is considered in a court of law.

In the game of rugby, a try is the action of scoring by putting the ball down behind the goal line of the opposing team.

If you say that something fails but not for want of trying or not for lack of trying, you mean that everything possible was done to make it succeed.