Perhaps you should try some spelling variations:
roman transport » romania transport, road transport, human transport
transport data » transport demand
transfer sur » transfer der, transfer auf, transfer aus
diem roman » diem romani, dem roman, im roman
luis diem » luis diego, luis de
data base » data based
luis a » luis f, luis c
a heat » a heart, _ heat, a head
sur a » sur la, sgr a, sul a

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( luis diem roman transport data base ) or ( luis a heat transfer sur a ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( luis diem roman transport data base ) OR ( luis a heat transfer sur a ))*.