TY JOUR TI COMPETITIVE INTELLIGENCE VIA YANDEX.DIRECT KW Yandex.direct KW semantics KW search query KW contextual advertising KW competitive intelligence KW construction organization JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Khoroshun, N.. AU Shamaeva , O.. AU Doroshev, B.A. PY 2017 IS 2 PB Belgorod State Technological University named after V.G. Shukhov