Perhaps you should try some spelling variations:
"hard trade transportation services." » "hard trade transport services.", "hard rail transportation services.", "hard road transportation services.", "hard safe transportation services.", "third trade transportation services.", "aid trade transportation services.", "ad trade transportation services."
"held firms transactions costs." » "held firms transactional costs.", "held free transactions costs.", "held term transactions costs.", "held firms transaction costs.", "held firms transactions system."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("hard trade transportation services.") or ("held firms transactions costs."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("hard trade transportation services.") OR ("held firms transactions costs.")).
• Removing quotes may allow a broader search: (( hard trade transportation services. ) or ( held firms transactions costs. )).
• Adding a wildcard symbol may retrieve word variants: (("hard trade transportation services.") or ("held firms transactions costs."))*.