Delete Previous Word in Excel Mac is not working

Hi, I'm a new Mac user and just started to download Microsoft Office for Mac recently, I have question regarding to the "Delete Previous Word" in Excel.

I found out that ctrl control + delete button cannot be used to delete a previous row in active selected cell (whereas it works fine in Word). I somehow read from the internet that you should first select the word by control + shift + left arrow, and then delete it, but this surely decreases my productivity a lot.

My main job is to deal with a lot of texts in Excel, so this little feature really means a lot to me. Is there any hack of quick tips to enable this feature?

Thanks a lot!