Thus if you select any sentence in your text and the app doesn't give back any results, it means that there's a problem with the sentence and you have to correct it.
The best way to get thousands of results is to do continuous searches. To make this easier the app lets you do several searches at once, and use asterisks as wild cards to do a wider search.
If you need to, you can look up synonyms to enrich your text. To open the different sections on the interface, you just need to press the Control key and spacebar at the same time.