word mean

Hello,everyone,

there is a question in my studying process. i can't be sure what's mean of "we can come on vocabularies." I think it mean we can learn vocabularies. but i'm not sure. Pls friends help me answer. thanks.

maybe it means, we can overcome vocabularies?

We can comment on vocabularies?

wth…i'm a native speaker and i don't understand that. O_o where did you hear that from.?..whatever it is, it sounds incorrect. you sure you copied it right?

I also think there is something wrong here. The word "vocabulary" is almost always singular.

Maybe "we can combine vocabularies"? 

I mean…there is a slang meaning but it is very rude and does not make any sense….so I'm going to leave that alone!