Perhaps you should try some spelling variations:
"online line research documents" » "online line search document", "online line research arguments", "online line research comments", "online line research document", "online line researching documents", "online line rechurch documents", "online online research documents", "online linked research documents", "online linear search documents", "online eine research documents", "online life research documents", "online live research documents"
"online chapter6 research students" » "online chapter1 research students", "online chapter5 research students", "online chapter7 search students", "online chapter6 research studies", "online chapter6 research instruments", "online chapter6 research study", "online chapter research students", "online chapters research students", "online chapter9 research students"
"online line search documents" » "online line search document", "online line searching documents", "online line church documents", "online eine search documents", "online life search documents", "online live search documents"

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 line research documents") OR ("online line search documents"))) OR ("online chapter6 research students"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"online line research documents\") OR (\"online line search documents\"))) or (\"online chapter6 research students\"))*".
• Removing quotes may allow a broader search: (((( online line research documents ) OR ( online line search documents ))) or ( online chapter6 research students ))*.