ergh silly search option

[A18A]

i search for something, and im all excited cause theres like 5 pages of results so i browse for a thread i want, and then when i went to the 3rd page of results, i get this message

Sorry - no matches. Please try some different terms.

You have reached this error because:
a) Search did not find any instances of the terms you requested,
Or..
b) Your terms do not meet the minimum word length. If searching for only one word, it must contain at least 4 letters.

it worked good for the 1st 2 pages, just doesnt from there on this got my hopes down any ideas why? i was kinda gutted

o yeah, i advanced seached the keyword "idle" and the "Search titles only" option under it and chose Carb Tech in the Search in Forum(s) option