(Yamhill Co., OR)  --  Authorities are searching for a man they want to question in connection with the death of a Vancouver woman.  The body of Lilia Osco-Ortiz was found Sunday in a blueberry field off Highway 99-W near the Yamhill County community of Lafayette.  Sheriff's deputies say 37-year-old Victor Melcher Villalba [[ vee-YAL-ba ]] was romantically involved with the victim for seven years.  Officials say the day before the body of Osco-Ortiz was found, she and Villalba had left together for the Oregon coast.