While you can place block elements in a
in HTML5, you can not nest a
elements.
You can only either use JavaScript to react on a click on the area outside of the inner links, or place a link behind the content using CSS positioning.
(But this is not good UX in general – the user does most likely not expect that certain parts of a piece of content are links to special targets, and clicking just slightly next to those links will take them someplace else …)