Perhaps you should try some spelling variations:
"optician and scientific instrument maker" » "optician and scientific instruments maker", "optician and scientific investment maker", "optician and scientific intent maker", "optician and scientific instrument player", "optician and scientific instruments naked", "optician and scientific instrument care"
"Optician and scientific instrument play" » "Optician and scientific instruments play", "Optician and scientific investment play", "Optician and scientific intent play", "Optician and scientific instrument player", "Optician and scientific instrument malay", "Optician and scientific instrument playing"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("optician and scientific instrument maker") or ("Optician and scientific instrument play"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("optician and scientific instrument maker") OR ("Optician and scientific instrument play")).
• Removing quotes may allow a broader search: (( optician and scientific instrument maker ) or ( Optician and scientific instrument play )).
• Adding a wildcard symbol may retrieve word variants: (("optician and scientific instrument maker") or ("Optician and scientific instrument play"))*.