does this sentence need a verb after d'autres? " J'ai trouve le supermarche mais je cherche toujours d'autres magasins specialises

Pardon the lack of accents, can't get the keyboard to change. I was practicing using indefinite pronouns and adjectives. In the above sentence I was marked wrong by the teacher because I didn't have a verb after d'autres. In english I wanted to say I found the supermarket but I'm still looking for other specialty stores.