Perhaps you should try some spelling variations:
transport safety » transport strategy
has africa's » east africa's, west africa's, aids africa's
transfer 4 » transfer _, transfer a, transfer der
transfer 3 » transfer _, transfer a, transfer 3.2
die basis » der basis
safety 1 » safety _, safety 5, safety 8
bias die » bias due, bias time, bias der
aguas » agus, agua

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: (( aguas has africa's transport safety 1 ) OR ( bias die basis ((transfer 4) OR (transfer 3)) a ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( aguas has africa's transport safety 1 ) or ( bias die basis ((transfer 4) OR (transfer 3)) a ))~".
• Adding a wildcard symbol may retrieve word variants: (( aguas has africa's transport safety 1 ) or ( bias die basis ((transfer 4) OR (transfer 3)) a ))*.