I think this will meet your need –
[show_post_snippets number_of_columns=3 post_count=6 image_size='large' show_meta='false' terms="inspiration,technology" taxonamy="category" post_type="post"]
But, I found that there is a slight typo in the theme which requires fix before you use this shortcode –
Pls change the line 434 in framework/presentation/layout-manager.php code from –
$thumbnail_output = mo_get_blog_thumbnail($thumbnail_size, $taxonamy);
to
$thumbnail_output = mo_get_blog_thumbnail($image_size, $taxonamy);
The fix will be part of the next update and hence this should one time change for you.