The bidding for the assets of St. Louis-based Trans World Airlines has become a little murky with three bidders submitting information to a federal bankruptcy judge. American Airlines has followed through with its promised bid. A second company has bid only for TWA’s computerized reservations system. A third bid, but forward by Jet Acquisitions Incorporated of Arizona, calls for 400 million dollars more than the offer made by American. The bankruptcy judge is expected to decide on the winning bid in a few weeks.