Perhaps you should try some spelling variations:
point transportation » joint transportation, point transformation, coins transportation
centre discussion » century discussion, century discussions, culture discussion
center discussion » century discussion, cancer discussion, century discussions
research center » research chapter
itf point » itf joint, af point, off point
paper » papers

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( oecd/itf point transportation research centre discussion paper ) OR ( oecd/itf point transportation research center discussion paper ))".
• Adding a wildcard symbol may retrieve word variants: (( oecd/itf point transportation research centre discussion paper ) OR ( oecd/itf point transportation research center discussion paper ))*.