Select :eq doesn't work as I want

Select :eq doesn't work as I want

How can I get the Nth child?

Example:

<body>
<div>
<a name="hehehe">Anchor 1</a>
<a name="hahaha">Anchor 2</a>
<a name="hihihi">Anchor 3</a>
<div>
<div>
<a name="hehehe">Anchor 1</a>
<a name="hahaha">Anchor 2</a>
<a name="hihihi">Anchor 3</a>
<div>
<div>
<a name="hehehe">Anchor 1</a>
<a name="hahaha">Anchor 2</a>
<a name="hihihi">Anchor 3</a>
<div>
<div>
<a name="hehehe">Anchor 1</a>
<a name="hahaha">Anchor 2</a>
<a name="hihihi">Anchor 3</a>
<div>
</body>

I want to get all anchors in the 3th position of each div

If I try $('div a:eq(0)') it selects only one element, why?