I use this website on my laptop but I believe the search function works the same on all devices. Here is how I use Search the most. If I want to search for a thread, I type my search string and then click "search titles only". This will give me just the threads with my search string. If I want to search within a thread, I type in my search string then in the drop box below I change "everything" to "this thread". That will return all the posts with my search string in this thread. So if I want to see all posts for "Shaw" in this thread, I enter Shaw in the search box and change the search from Everything to This Thread.
The other feature I like is not search, but you might find helpful. At the top of every thread, you can sort the posts by Date or Most Liked. I usually resort a thread by Most Liked because that will put the juiciest posts at the beginning of the thread saving you time from wading through stuff that may not be as juicy.
