Perhaps you should try some spelling variations:
labor laboratory » laboratory laboratory, inter laboratory, pcr laboratory
cold working » color working, world working, word working
world spring » world during, world print, world seeing
cold spring » cold springs, cold spraying, cold forging

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: ((((cold spring) OR (cold working))) OR (world spring)) ((labor laboratory) OR (under laboratory)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((cold spring) or (cold working))) or (world spring)) ((labor laboratory) OR (under laboratory))".
• Adding a wildcard symbol may retrieve word variants: ((((cold spring) or (cold working))) or (world spring)) ((labor laboratory) OR (under laboratory))*.