Search | text + number

Hi,

We have a shopware 6 installation with the basic search functionality but are having troubles when the search contains both text and number (and both are combined in the productname value). When searching for (f.e.) „letterbox 600“ it doesn’t find the product with this exact same name. When searching for „letterbox“ is does find the product, and searching for „600“ it also does find the product. It looks like the default search engine doesn’t accept a search with text combined with numbers. Does anyone have a solution/also experiences this problem?