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Expansion of search query is aimed at improving the relevant [search] results or acquiring appropriate sources for current or future research. It takes place when users are dissatisfied with their search results or have obtained insufficient results. Vocabulary control tools headed by online thesauri are among the resources used for expanding search query. The present paper attempts to empirically demonstrate the impact of using terms from ERIC Online Thesaurus [ERICOT] in expanding searchdoaj:d18e947a9bb8471297aa1cddd4354210 fatcat:dld6ut5aj5dk5enjkfpgau4e7e