Reading a post is a volunteer thing, it is not a must. If you put the mouse pointer on a thread, you can read a preview of the thread content (see the pic). This preview works better with Internet Explorer (Firefox have some problems) but there is anyway the possibility to read a preview without clicking on the link. This feature is very useful for people with a slow internet connection. So, the number you are referring is not a reliable value of the people that actually read your thread, but only the number of people that clicked on the thread.
Probably people are not clicking on your thread because after reading the preview they already know that are not able to answer.
Have a little more patience and bump your thread as suggested if you don't receive answers (bumping every few hours is excessive, obviously )