Perhaps you should try some spelling variations:
"cord basic mechanical paper" » "cord basic mechanisms paper", "cord basic mechanism paper", "cord dynamic mechanical paper", "cord basic mechanical proper", "cord basic mechanical power", "cord basic mechanical powers", "world basic mechanical paper", "word basics mechanical paper", "lord basil mechanical paper"
"work ani technical papers" » "work api technical papers", "work ai technical papers", "work panic technical papers", "work any technical papers", "work anu technical papers"
"work asi technical papers" » "work asia technical papers", "work api technical papers", "work ai technical papers", "work ask technical papers"

Try widening your search to All Fields.

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: (("cord basic mechanical paper") OR ((("work ani technical papers") OR ("work asi technical papers")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"cord basic mechanical paper\") or (((\"work ani technical papers\") OR (\"work asi technical papers\"))))".
• Removing quotes may allow a broader search: (( cord basic mechanical paper ) or ((( work ani technical papers ) OR ( work asi technical papers )))).
• Adding a wildcard symbol may retrieve word variants: (("cord basic mechanical paper") or ((("work ani technical papers") OR ("work asi technical papers"))))*.