Hostap related: using more than one wi fi card on a single host

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http://askubuntu.com – I wish to check if I can increase wireless throughput by teaming more than one wireless card on single linux host under bridge interface. OR If I wish to use one linux box and two wireless USb cards serving wireless signal for two partitioned-room with box kept near the partition and usb cables layed in each room. I tried the asked options but not successfull for two USB cards on a single linux host with single ethernet cable connection. I successfully tested, hostapd with one TPLink TL821N v3 USB card in bridge mode without DHCP server on Ubuntu 12.04 server os platform. can anybody guide (HowTos)