According to Google Adwords Keyword Planner, June is the slowest month of the year for most keyword searches, including vintage clothing. You can look forward to September and October which are 4 times more popular with shoppers looking for vintage clothes.
You could still be getting a lot more views by add a few general keywords to the beginning of the shop title. Doing this works both in Etsy searches and Google searches. Shoppers don't always have a certain garment they wan to buy, only the era they are interested in. Adding a general keyword will bring up your listings in searches using exactly those words, such as, "70s clothes" and this will bring you a lot more views.
Here is a very short list of keywords I found on Google Adwords Keyword Planner. The number on the right is the average number of searches each month using exactly those keywords:
60s clothes 1000
60s clothing 1600
70s blouse 50
70s clothes 4400
70s clothing 1600
70s top 20
80s clothes 5400
80s clothing 8100
80s fashion 40500
90s clothing 2900
retro clothing 3600
vintage clothes 4400
vintage clothing 49500
For this listing, for example:
"60s 70s Boho Top Embroidered Hippie Shirt Festival Fashion Lightweight Cotton Colorful Flowers Floral Spring Summer Top Womens Medium Large"
Add the words, "70s Clothes" to the beginning of the listing title, followed by the rest of the words, like this,
"70s Clothes / 60s 70s Boho Top Embroidered Hippie Shirt Festival Fashion Lightweight Cotton Colorful Flowers Floral Spring Summer Top Womens Medium Large"
"Add words like "70s clothes", "60s clothes", "80s clothes" etc, to every listing and you will see a big increase in views in your shop over the next few weeks. GUARANTEED!