Refreshing the files helps. Doing a search for each one will definitely help with finding sources for the files to downld from. But accept it as part & parcel of LW (& most other p2p share programs) that you will end up with files that will not always downld easily for one reason or another.
My advice is to look at the following page & follow ALL the links within it: To continue files downlding (click on link) And you'll not only find immediate answers but pick up on some very handy skills. Once you master these tools you'll develop your own techniques for the most effective downld methods for your own system & set up.