Another way is to use CSS column-width like this..
.row {
-moz-column-width: 20em;
-webkit-column-width: 20em;
-moz-column-gap: 10px;
-webkit-column-gap:10px;
}
.row > .col-lg-3 {
display: inline-block;
padding: 0;
margin: 10px;
width: 100%;
float:none;
}
Demo: http://bootply.com/jFdfbBgkv6