Perhaps you should try some spelling variations:
"world soils vivo studies" » "world soils vitro 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"
"cold soils bogs studies" » "cold soils boots studies", "cold soils ions studies", "cold soils loss studies", "cold soils born studies", "cold soils biot's studies", "could soils bogs studies", "sold soils bogs studies", "old soils bogs studies"
"cold soils dogs studies" » "cold soils drugs studies", "cold soils ions studies", "cold soils loss studies", "cold soils do studies", "cold soils don studies", "could soils dogs studies", "sold soils dogs studies", "old soils dogs 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 ((("cold soils bogs studies") OR ("cold soils dogs studies"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"world soils vivo studies\") or (((\"cold soils bogs studies\") OR (\"cold soils dogs studies\"))))*".
• Removing quotes may allow a broader search: (( world soils vivo studies ) or ((( cold soils bogs studies ) OR ( cold soils dogs studies ))))*.