you can use what is called a butterfly plug



additional image/variant here



another word use is "plasterboard plugs" , cause behind plasterboard is hollow just like your bricks

see here http://www.askabuilder.co.uk/how-to/fix-to-plasterboard.html

see here also http://www.itwproline.com.au/Hollow-Wall-Anchor/default.aspx

all via power of google

later the plug can hold.. but the wall came off.. lol