I believe you can even do it with AND operation like: port D AND -High collision or drop rate. This is the easiest way
The other is to put the digit check
"port D[0-25]-High collision or drop rate." I havent tested this,
Or there is another way to search for a string of a specific length. So you can split them at the digit and merge it with AND operation for remaining sentence. Anyway, you can refer to the Reg Expression Filter guide from Solar Winds :
kiwisyslog.com/help/syslog/index.html?filters_reg_exp.htm
Let me know how you resolved the issue