Also, the in-game help file on Hunting Logs flat out says that the entry in the Log is just a hint, and that the target can be found in more than just that location at times.If you read what the other person had explained, they were correct. While the map may show 15-20 names of places, the zone itself is actually only split into possibly 4-5 sub-areas. The mob you are looking for is literally in the section it says it's in, the sections themselves are just way larger. Even though it says another name right above where you are, if you find the monsters and check your map it will actually show you are in the sub-area that the log says.
So it's not like they weren't up front about the fact that it won't hand-hold you. ;p If you run across it elsewhere, hoorah. Otherwise, check the hint.