Perhaps you should try some spelling variations:
"luis c ideias transport demand mao" » "luis c ideas transport demand mao", "luis c india's transport demand mao", "luis c liberia's transport demand mao", "luis c ideias transport demand may", "luis c ideias transport demand a", "luis c ideias transport demand gap", "luis _ ideis transport demand mao", "luis f ideias transport demand mao"
"luis e heat transfer tax cao" » "luis e heat transfer taxes cao", "luis e heat transfer _ cao", "luis f heat transfer tax cao", "luis a heat transfer tax cao", "luis _ heat transfer tax cao", "luis 1 heat transfer tax cao"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("luis e heat transfer tax cao") or ("luis c ideias transport demand mao"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("luis e heat transfer tax cao") OR ("luis c ideias transport demand mao")).
• Removing quotes may allow a broader search: (( luis e heat transfer tax cao ) or ( luis c ideias transport demand mao )).
• Adding a wildcard symbol may retrieve word variants: (("luis e heat transfer tax cao") or ("luis c ideias transport demand mao"))*.