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 easy variety", "international early piety"

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

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