Expert linguists can also help, try to reach out to local linguistic universities (both teachers and students) and see if they can help to gather a diverse set of sound-diverse sentences in your language.
Vhaḓivhi vha luambo na vhone vha nga thusa, i ya na kha universithi dza vhuponi haṋu dza vhaḓivhi vha luambo (vhadededzi na vhagudiswa) nahone ni vhone arali vha tshi nga kona u thusa nga u kuvhanganya mitaladzi i re na mibvumo yo fhambananaho nga luambo lwaṋu.