This is the 2256th most frequent Korean word.
통해서
"Through" or "by means of."
The term '통해서' is used to express the means or method of performing an action, in this case, using the internet as the medium to find information.
나는 인터넷을 통해서 정보를 찾았어요.
I found information through the internet.
Here, '통해서' conveys the intermediary role of a friend in the process of getting acquainted with each other.
우리는 친구를 통해서 서로를 알게 되었어요.
We got to know each other through a friend.
In this sentence, '통해서' illustrates that the research was conducted using the data as the underlying method or resource.