Hi,
Just to to explain one thing in google's search:

When you use quotes "" means that if you have more than a word and both come together, google will search for both words in the same order you've typed.

Imagine you know a thread's name but you don't want to scan all the pages looking for it. just type it between quotes and it will come in all flavors: Single post, thread, threads index...

Try this:

"Conflict receiving RS485 stream" site:www.picbasic.co.uk/forum

it will come 23 links, all about the subject.

Hope this help

Hans