Now, after you generated domain names from keywords, or imported them from file, you may want to review them and delete unwanted domains. The recommended way to do it is to select such domains and delete by pressing Delete key, one by one. Or mark unwanted domains and choose "Delete Marked Domains" command from "Edit" menu. After unwanted domains were deleted, click "Mark All" button to mark all domains.
Alternative method is to find desired domains and lookup only them (use right-click menu) ignoring all other domains.
Read next topic on how to check marked or currently selected domain's availability - How to Lookup Desired Domains.