Use thesaurus and stop word rules to tweak user queries when they don't return the desired results.
Use featured result and ranking expression rules to modify the ranking of certain items.
Use search optimization tools to customize and enhance your search experience by configuring filter, query parameter, ranking weight, and trigger query pipeline rules.
Organize your query pipeline rules so that they apply only under specific circumstances.
Use query pipeline conditions to associate query pipelines, query pipeline rules, and Coveo Machine Learning models to a specific search context.
Use A/B tests to test the effectiveness of your query pipeline rule changes.