Perhaps you should try some spelling variations:
"a learning research use." » "a learning resources use.", "a learning research base.", "a learning research based.", "a learning research unit.", "_ learning research use.", "e learning research use."
"a learning research phase." » "a learning resources phase.", "a learning research based.", "a learning research paper.", "_ learning research phase.", "e learning research phase."
"a teacher resource use." » "a teaching resource use.", "a teaching resources use.", "a water resource use.", "_ teacher resource use.", "_ teachers resource use.", "head teacher resource use."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("a teacher resource use.") or ((("a learning research use.") OR ("a learning research phase."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("a teacher resource use.") OR ((("a learning research use.") OR ("a learning research phase.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"a teacher resource use.\") or (((\"a learning research use.\") OR (\"a learning research phase.\"))))".
• Removing quotes may allow a broader search: (( a teacher resource use. ) or ((( a learning research use. ) OR ( a learning research phase. )))).
• Adding a wildcard symbol may retrieve word variants: (("a teacher resource use.") or ((("a learning research use.") OR ("a learning research phase."))))*.