Hi Sindhu,
Follow below steps:
1. Create a parameter with all selected and string as the data type of parameter.
![](https://www.edureka.co/community/?qa=blob&qa_blobid=5302901627230255526)
2. Now add a calculated field to search the product with those letters and display them.
![](https://www.edureka.co/community/?qa=blob&qa_blobid=13491346093060292589)
3. Add the created field onto row shelf and show parameter on sheet.
4. The sheet would be like below before typing any string/characters.
![](https://www.edureka.co/community/?qa=blob&qa_blobid=8188924478953548252)
5. Now type any characters, those products that match product would show up.
![](https://www.edureka.co/community/?qa=blob&qa_blobid=3957122566264274431)
Hope this helps you.