Perhaps you should try some spelling variations:
mirror laboratory » monitor laboratory, inter laboratory, air laboratory
labor laboratory » laboratory laboratory, under laboratory, inter laboratory
world securing » world security, world setting, world seeing
world spring » world print, world seeing, world shewing

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