I am trying to mix/match cities and carriers using ita to see if I can get a price on an upcoming flight, and i'm getting zero results.

NYC -> MNL

I would prefer BR 31 on May 15. If all else fails I can do NH, but the timing of BR31 is preferred.

MNL -> WAS

I would prefer to route the return through NRT on NH or UA on/around May 24, but i'm also open to going through HKG or ICN.

ITA isn't returning any results. What am I doing wrong? Searching for business class if that matters. I'm open to other carriers/routing, but would like to keep it on star alliance (i'm ok with a short leg not being on star alliance - for example if I have to go from mnl-hkg on Cathay). I eventually want to ticket this on 016 ticket stock.

If i'm inquiring for help in the wrong thread I apologize. Please let me know where I should have posted this.