Strange- I typed in Land o' the dirty weather and got no results. Are you sure that it does "exactly what it says"? Sometimes, Occasionally, If you hold your tongue just right. Now, if I had used lower case on land... it might have worked.
Guest, the answer is to try, try again, using different words from the song, before you give up on the DT and Forum Search. If the entry is fairly recent it may not be in there yet, in which case go to Forum Search under Quick Links- If you have a lot of free time and want to play around.