Empty results when searching for scoped packages with small name length

[segrey]

Currently, search for a scoped package with name pattern containing less than 4 characters finds nothing.

Actual
https://api.npms.io/v2/search?q=mat+scope:angular yields empty search results:

{"total":0,"results":[]}

While https://api.npms.io/v2/search?q=mate+scope:angular finds something:

{"total":4,"results":[...]

Expected
https://api.npms.io/v2/search?q=mat+scope:angular should also yield non-empty results.