I'm experiencing an issue with the `DriveApp.searchFiles()` in Apps Script.

If I search files in Drive, whose names are like this (book names):

`Rif_Lettura_Nussbaum_02012014`

or

`La Torre_Lalatta_Legalizzare_Corriere_23122013`

the search find nothing in Drive.

```
function test(){

  var title='Rif_Lettura_Nussbaum_02012014';
  //Uncomment to try the working sample
  //var title='Rif_Lettura_Nussbaum_02012';

  var candidateFiles=DriveApp.searchFiles('title contains "'+title+'"');
  var count=0;
  var fileCandidato;
  while (candidateFiles.hasNext()){
    count++;
    fileCandidato=candidateFiles.next();
    if(fileCandidato.getName().indexOf(title)!=-1){
      Logger.log("Finded: "+fileCandidato.getName());
    }

  }

  Logger.log(""+count+" files found with title "+title);

}

```

Substantially seems that the `searchFiles()` function works if the words separated by space have length less or equal then 26 (that is the number of letters of the English alphabet).

Anyone have found this error, and know a workaround?