pubmed query returns "Search did not yield any results" when there are results doing the same query in pubmed about socialnetworkapp HOT 2 CLOSED

Two issues here:

(1) The query isn't entirely valid. There is a missing quotation mark. Ryu WS"[Author] should be "Ryu WS"[Author]

(2) The # of valid publications resulting from the (correct) query is greater than 500 (26924 to be exact) and the app basically doesn't generate a network out of it. I've modified this, but the app seems unable to generate the network regardless (still investigating). I seem to recall that NCBI doesn't really like it when users have extremely large requests (> 500). What was the story behind this?

from socialnetworkapp.

Update: Network loaded but it took a very long time. Probably a good idea to notify users that the request is really large and allow them to back out (if they wish).

from socialnetworkapp.