Perhaps you should try some spelling variations:
"international barley variety" » "international parle variety", "international halley variety", "international bar variety"
"international early variety" » "international energy variety", "international euro variety", "international eai variety", "international early satiety", "international early piety", "international large variety"
"international easy variety" » "international east variety", "international eai variety", "international eamt variety", "international das variety", "international each variety", "international every variety"

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: (((("international barley variety") OR ("international early variety"))) OR ("international easy variety")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"international barley variety\") OR (\"international early variety\"))) or (\"international easy variety\"))".
• Removing quotes may allow a broader search: (((( international barley variety ) OR ( international early variety ))) or ( international easy variety )).
• Adding a wildcard symbol may retrieve word variants: (((("international barley variety") OR ("international early variety"))) or ("international easy variety"))*.