Dissatisfaction with low interest rates and sluggish growth in the developed world is luring bond investors to emerging markets. In the first ten months of this year, the 929 emerging-markets bond funds tracked by Cambridge, Massachusettsbased EPFR Global pulled in $49.5 billion in new assets. Thats more than five times the $9.5 billion they received in 2009 and 52 percent of total emerging-markets bond fund assets.