Perhaps you should try some spelling variations:
harbor laboratory » labor laboratory, laborg laboratory, mirror laboratory
word working » world working, work working, works working
world spring » world during, world print, world seeing

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((word working) OR (world spring)) harbor laboratory.
• Adding a wildcard symbol may retrieve word variants: ((word working) or (world spring)) harbor laboratory*.