Sari, Try       

Example

Foo Foo

Result will be

 Foo  Foo

+1 shameem,

Yuo can also use bootstrap classes, please refer http://www.w3schools.com/bootstrap/bootstrap_templates.asp
or use &tab; for tab space,   ..
You can also use the style tag

For white space in qweb report in odoo you can just use the   &nbsp or style like margin left and right.

To create a specific spacing using the HTML entity code for non-breaking space ( ) in a QWeb report, you can use it within your template. Here's an example of how you can achieve this:

This is some content.

This is another content.

odoo support bootraps 4, use class ="ml-2 mr-2 mt-2 mb-2"