Perhaps you should try some spelling variations:
"world soils vivo studies" » "world spoils vivo studies", "world soil vivo studies", "world soul vivo studies", "world soils vi studies", "world soils vii studies", "world soils bio studies"
"world soils vitro studies" » "world spoils vitro studies", "world soil vitro studies", "world soul vitro studies"
"cold soils book studies" » "cold soils back studies", "cold soils bio studies", "cold soils bogs studies", "could soils book studies", "sold soils book studies", "old soils book studies"

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: (((("world soils vivo studies") OR ("world soils vitro studies"))) OR ("cold soils book studies"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"world soils vivo studies\") OR (\"world soils vitro studies\"))) or (\"cold soils book studies\"))*".
• Removing quotes may allow a broader search: (((( world soils vivo studies ) OR ( world soils vitro studies ))) or ( cold soils book studies ))*.