The phrasal verb 'go through' has a number of uses in professional and social contexts. To 'go through' something can mean to examine, study, or search for something in a thorough or detailed way. You might 'go through' an article, for example, to find specific information; or 'go through' your work to look for any mistakes. If a request, contract, law, or change in rules is accepted or approved, you can say that it has been 'gone through', meaning that it has passed a number of stages and is now ready to be put into action.
To 'go through' something can also mean to experience or survive a difficult or unpleasant situation or period in your life. So, you can 'go through a tough time' or 'go through a difficult experience', for example. To 'go through' something can also mean to 'use up' materials or resources. So, you can say you 'go through' a lot of coffee when you are working late, for example. To 'go through' something can also mean to rehearse or to practice something. You might 'go through' a speech a few times before delivering it; or a dancer or athlete might 'go through' their movements many times in order to perfect them. If you follow a particular schedule or precise steps or procedures, you can say you 'go through a number of steps' or you 'go through a routine'.
Additional examples with 'go through' are:
A friend's company has a job opening that they think you should apply for. They offer to help you tailor your CV for the application:
"I can meet you this evening to go through your CV before you apply for the job."
A colleague has asked you to send a report to their new e-mail address. You received an e-mail telling you that your message could not be sent:
"I tried to send the report to you yesterday evening, but it appears the e-mail did not go through."
Your company is hosting an educational event for students from local schools. You want to make sure you have enough sandwiches for lunch:
"How many sandwiches do you think 80 school children will go through?"
You are driving for a long time and you want to stop for lunch:
"We can turn off the motorway and go through the town to look for a restaurant."