Perhaps you should try some spelling variations:
"technology conventions periodicals." » "technology conditions periodicals.", "technology collections periodicals.", "technology prevention periodicals.", "technology convention periodicals.", "technology connections periodicals.", "technology inventions periodicals."
"technology conversion periodicals." » "technology conservation periodicals.", "technology cooperation periodicals.", "technology construction periodicals.", "technology convention periodicals.", "technology conclusion periodicals.", "technology connection periodicals."

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