Perhaps you should try some spelling variations:
"technological cooperation periodicals." » "technological operation periodicals.", "technological corporations periodicals.", "technological competition periodicals.", "technological conservation periodicals.", "technological construction periodicals.", "technological protection periodicals."
"technology conventions periodicals." » "technology conditions periodicals.", "technology conversion periodicals.", "technology collections periodicals.", "technology convention periodicals.", "technology connections periodicals.", "technology inventions periodicals."

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