Filter variables
You can filter the variables so that only the selection of variables you want to see is displayed in the dataset window.
Click on the Settings wheel on the right side of the Dataset window
Select which variables, groups, or sets you want to be displayed from the "Column settings" card
Search variables
Click on the Settings wheel on the right side of the Dataset window
Type in the name of the variable you are looking for in the search field at the top of the "Column settings" card