How would I do an exact match on a not_analyzed field that contains a large amount of text? For example take the following paragraph:
Kefir grains are a combination of lactic acid bacteria and yeasts in a matrix of proteins, lipids, and sugars, and this symbiotic matrix, (or SCOBY) forms "grains" that resemble cauliflower. For this reason, a complex and highly variable community of lactic acid bacteria and yeasts can be found in these grains although some predominate; Lactobacillus species are always present. Even successive batches of kefir may differ due to factors such as the kefir grains rising out of the milk while fermenting, or curds forming around the grains, as well as room temperature.
How can I get a match on a exact phrase search for "lactic acid bacteria and yeasts can be found in these grains" using the query_string only?