Saved searches: Web of Science gives you the option to save a search. You can then re-run that saved search at a later date (without having to re-enter all your search terms again) and you'll retrieve an updated set of results. Of course, you may want to modify or expand your keywords if you've developed your knowledge of a topic's terminology since your original search.
Email alerts: To help you maintain current awareness of your topic, Web of Science gives you the option to set up an email alert that will inform you of:
Before saving searches and setting up alerts: