A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 100,462
"Available flights" does not mean that the flights are available in particular (cheap) fare classes.
Try checking the cost of returning Wednesday, Friday, Saturday, etc. You might find that one of these days is a relative bargain. Look also at alternative routings, perhaps MU through PEK rather than PVG on this itinerary. It could be useful to look at your fare rules to determine whether the MU-AA combination is required. For instance, CZ also serves PVG-LAX, IIRC with an A380.