: position:"LH on" - this returns the results for 'position' of "LH on" : followed by all the results for "LH off", we cannot understand why "LH off" : is returned in these circumstances for an Indexed search.
wild guess: is this is a text field where "on" listed as a stop word? if it is, you are just searching for 'position:"LF"' and the result ordering is a conincidence of length normalization (the "LF on" docs only contain the one term "LF" and the "LF off" docs cointain two terms, so the shorter docs score higher) if that's not it, then we need a lot more info about your schema, your data, specifics of the queries, the score explanations, etc... -Hoss
