Some search terms not working

## I want to report a bug:

### What is the current behavior?
I am using jekyll-algolia with my static Jekyll website on a DigitalOcean droplet. Everything works well, but I occasionally find words that are not appearing in my search results (e.g. shiny does not give results despite being found on several pages and as a tag for the site). When I check my index on the Algolia website, shiny is indeed present. I don’t understand why this term fails to show results or how to resolve this. Interestingly, 'shiny se' (the beginning of shiny server) does give results. So the pages are in fact indexed, I just cannot access them with shiny as a search term. Any suggestions would be appreciated.

### Git repository to reproduce the issue:
I don't have a GitHub repo for this project, I use my droplet as the remote and build the site there. You can check the behavior for yourself at [my website](https://cliftonfranklund.com).

### Ruby version used:
ruby 2.3.7p456 (2018-03-28 revision 63024) [universal.x86_64-darwin18]

### Jekyll version used:
jekyll 3.8.5

Start by reproducing the missing exact-term result on the linked website and reviewing the jekyll-algolia behavior with the reported Ruby 2.3.7 and Jekyll 3.8.5 versions. Compare searches for “shiny” and “shiny se” against the Algolia index; done means identifying the cause and documenting or fixing the search behavior, though no repository or specific project file is provided.

Written by the indexing model from the issue text.