‘Go through’ is a phrasal verb. To go through can mean to experience a difficult or unpleasant situation. For example, you can go through a difficult time in your life or go through a divorce, for example. To go through can also mean to search through something or to look through something, usually to find something or to discover information. You can go through documents or go through accounts. If something goes through it can mean to be officially approved or submitted. For example, a sale can go through or an application can go through. To go through can also mean to use up a resource, so you can go through a lot of money on your holidays, or go through the groceries you bought last week.

1. I was shocked to hear about what happened to Maria's son. I can only imagine what she must be going through.
2. John went through a messy divorce last year which took its toll on him, but now he seems much more like his old self again.

1. The business has gone through some challenging times, but we managed to get through them by working as a team.Things are finally starting to look up!
2. We went through some difficulties in designing this product but the results have been worth it.