Just wanted to share my experience with this map on the chance that it might help someone who is as frustrated as I was.

I downloaded the map using mapsource onto my Garmin Nuvi 1100, and the map displayed fine but I couldn't search for street addresses even after I made sure I activated only this map and de-activated all my other maps.

After much experimentation and a very fortunate brainwave, I discovered that searching for street addresses requires that I leave a space after every letter. So, for example, instead of searching for the street "CUA DAI", I had to search for "C U A D A I".