Perhaps you should try some spelling variations:
"cad basic techniques paper" » "cad basic techniques upper", "cad basic techniques peter", "cad basic techniques pattern", "ipad basic techniques paper", "land basic techniques paper", "cord basic techniques paper"
"word basics technical paper" » "word basics techniques paper", "word basic technique paper", "word its technical paper", "world basic technical paper", "bond basics technical paper", "cord basic technical paper"
"cad basic technical paper" » "cad basic mechanical paper", "cad basic technique paper", "ipad basic technical paper", "land basic technical paper", "cord basic technical paper"
"world banks technical papers" » "world tasks technical papers", "world blocks technical papers", "world apis technical papers", "world bank's technical papers", "world bank technical papers", "work banks technical papers"

Try widening your search to All Fields.

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: (((("word basics technical paper") OR ((("cad basic technical paper") OR ("cad basic techniques paper"))))) OR ("world banks technical papers")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"word basics technical paper\") or (((\"cad basic technical paper\") OR (\"cad basic techniques paper\"))))) or (\"world banks technical papers\"))".
• Removing quotes may allow a broader search: (((( word basics technical paper ) or ((( cad basic technical paper ) OR ( cad basic techniques paper ))))) or ( world banks technical papers )).
• Adding a wildcard symbol may retrieve word variants: (((("word basics technical paper") or ((("cad basic technical paper") OR ("cad basic techniques paper"))))) or ("world banks technical papers"))*.