Hi Tamas,
We can achieve this scenario by using the Localization feature of Grid. Please refer the below documentation for more details on Localization feature,
Based on your scenario, we suggest you to use en-US culture resx file and modify the default value for the key (Grid_Search) with your custom text. Please refer the screenshot below, in which we have modified the default value for Grid_Search using a custom text.
We have prepared a sample based on the above suggestion for your convenience, please download the sample from the link below,
And also, we suggest you to refer the below github link for the available resx files. We have already listed the available translation text for our controls in below github link.
Please get back to us if you need further assistance.
Regards,
Renjith R