Perhaps you should try some spelling variations:
"making vocational research : july 2012" » "making educational research : july 2012", "making national research : july 2012", "making actional research : july 2012", "banking vocational research : july 2012", "marketing vocational research : july 2012", "speaking vocational research : july 2012", "making vocational research : july 2013"
"iii options research : june 2011" » "iii actions research : june 2011", "iii optics research : june 2011", "iii operations research : june 2011", "iii option research : june 2011", "i options research : june 2011", "exit options research : june 2011", "iii options research : june 2013", "iii options research : june 2014", "iii options research : june 2010"

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: (("making vocational research : july 2012") OR ("iii options research : june 2011"))~.
• Removing quotes may allow a broader search: (( making vocational research : july 2012 ) or ( iii options research : june 2011 ))~.
• Adding a wildcard symbol may retrieve word variants: (("making vocational research : july 2012") or ("iii options research : june 2011"))*.