For a more complex searching, I suggest using the Regular Expression object.
You can find the VFP class at HOME()+"\FFC\_RegExp.vcx". Also, there are examples on using this class in the Solution examples. To aid in creating your own Regular Expression on the fly, look at the following links.
http://regexlib.com/And for good references
http://regexlib.com/CheatSheet.htm
Greg Reichert