Does SDMB search engine allow for a phrase search ("salt substitute " )
like google does ?
Can I use any Boolean logic at all ?
The search engine does NOT allow for searching for a phrase “xxx yyy zzz” the way Google does.
The search does not support phrases, but it does (grudgingly) support Boolean and wild cards.
So you can search for salt AND substitute
or you can search on substitut* to find substitute, substitutes, substituted, and substution.