Grepfrut is a Vim plugin to search for a string on multiple files (grep). Just use the Gf command followed by the string to search:
:Gf blue car
To do a case insensitive search:
:Gfi blue car
To make Grepfrut always ignore some files, use the g:grepfrut_global_exclude option:
let g:grepfrut_global_exclude = '.*(node_modules|\.next|\.git).*'