Thanks for the reply.
IOT,1;Bluetooth,2 ==> 1 is the count of word "IOT" being mentioned in the sentence and 2 is the count of the word "Bluetooth" being mentioned in the sentence.
I couldn't use your propose way because IOT and Bluetooth is just sample, and it must be according to the data being input by the user in the parameter. and the column that contains "IOT,1;Bluetooth,2" is calculated field from calling R function (not from the data source).
In your solution, you create new sheet with data IOT and Bluetooth and manually join them.