If you are undertaking a large research project, you may want to check out the IFIS Publishing Best Practice in Literature Search guide, which is aimed at literature searching as the basis for a literature review which needs to be comprehensive, unbiased and systematic. You will find the guide, including translations, here: Guides BY SUBJECT - LibGuides at IFIS
This is a growing playlist of past webinars on topics related to best practices in literature searching in the sciences of food and health.
You are also welcome to sign up for upcoming webinars here: Register for Best practice in literature searching (ifis.org)