The phrase "a few substantial" is correct and usable in written English.
It can be used when referring to a small number of significant or important items, ideas, or contributions.
Example: "The report highlighted a few substantial changes that need to be implemented for better efficiency."
Alternatives: "several significant" or "a handful of important".
A few substantial artists grazed those force fields.
A tea house that offers a few substantial dishes would make a good bet.
The administration has committed to spend more money for that purpose, but "there remain a few substantial concerns about the adequacy of the proposed budget," the memo said.
Unlike most of California, where the coast is clogged with development, the shores of Oregon and Washington have no major cities and only a few substantial beach towns.
A description of a New Year's Eve party, to which the teen-age writer attempts, with great difficulty, to transport some beer, occupies (admittedly with a few substantial divagations) something like seventy pages.
Traces of a few substantial buildings -- with tile roofs, many rooms, paved floors, stone benches and generous courtyards -- seemed to attest to a city with a social and political hierarchy.
So let's kick that particular elephant out of the room because Peter Jackson did an amazing job of creating such a character in such a world where there are few substantial female roles to marvel at.
There's at least one grumpy reviewer, though, who wished that the Canadian Brass had lingered a shade longer on the few substantial pieces in their peripatetic repertory--in the pursuit of the "serious" musicianship they are rumored to espouse.
But even at its most mean-spirited, the book makes a few stingingly substantial claims.
O.K., there are a few more substantial reasons why you might want an online mailbox whose address never changes.
Salads and vegetables, some served with eggs, and a few more substantial dishes, including burgers, round out the choices.
