Hello fellow searchers.

Im building a search functionality, where i'd like to search on different types (nodeTypeAlias), but when getting a result on this, include that the score has been calculated, which means document at the very start has different scores, because my nodeTypeAlias's has different length. 
for instance: 
I have 4 documentTypes (nodeTypeAlias), news, user, activity. And just making a search like:
+(nodeTypeAlias:news nodeTypeAlias:user nodeTypeAlias:acitivity) 

This will generate diffent scores on the documents, which is not wanted. I'd like everything to have score on 1 based on that luceneQuery. 
If i paste the luceneQuery directly into Luke, then it works as excepted, but when i do .SetBoost(0) it resolves into a ^.0, which lucene give an error on. 

So the question is, how can i neutralize a term / query if i can't do it with SetBoost ?  (Im using Standard analyzer)