disentangle

US /ˌdɪs.ɪnˈtæŋ.ɡəl/
UK /ˌdɪs.ɪnˈtæŋ.ɡəl/
1.

gỡ rối

to separate things that have become joined or confused:

:
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It's difficult to disentangle hard fact from myth, or truth from lies.