Sliding Keyboard v1.2 has been published to marketplace finally.
It contains a better word matching algorithm that should fine better results for tracing.
Default tracing speed is Normal. It you have issues with word matches please try changing the speed to Slow or to fast and that should change the results you get substantially.
I will try to put 1.4 out to marketplace today. It contains various fixes and the ability to remember previous usage. There is also an option for broad search which allows for non precise swipe start (though it becomes slower as it searches 4 / 6 times more data).
Please remember Sliding Keyboard only contains English (American / British Dictionary).