Manual Theme: Live Search not work well

When configuring the search bar on the Home Page of Options Manual, it does not work well. By entering a search criteria, the first entries that reports are correct, but then it incorporates other entries that do not meet the criteria entered. How this is solved so that only search results that match the search criteria? For example: Entering “stock” and shows the first entries that have stock in content or category, but then appears to “Hello World” entry that has no reference to “stock” and does not belong to the category.