Perhaps you should try some spelling variations:
"online rand research elements" » "online rand research experiments", "online rand research effects", "online rand research students", "online brand research elements", "online range research elements", "online ad research elements", "online band research elements", "online hand research elements"
"online card research elements" » "online card research experiments", "online card research effects", "online card research students", "online care research elements", "online based research elements", "online car research elements", "online case research elements"
"online dna search document" » "online dns search document", "online data search document", "online dial search document", "online ina search document", "online dna research document"

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: (("online dna search document") OR ((("online rand research elements") OR ("online card research elements")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"online dna search document\") or (((\"online rand research elements\") OR (\"online card research elements\"))))".
• Removing quotes may allow a broader search: (( online dna search document ) or ((( online rand research elements ) OR ( online card research elements )))).
• Adding a wildcard symbol may retrieve word variants: (("online dna search document") or ((("online rand research elements") OR ("online card research elements"))))*.