At the CA Bankers Compliance Conference last October, the question was asked (in the Regulator Panel) about using the OFAC website to do searches. The Regulator, I think from FRB SF, made it clear that using the OFAC site was unacceptable.
Using the search/find function in Excel or Acrobat Reader is absolutely literal, letter for letter. Interdiction software uses algorithms for "sounds like" functions as well as variations of names translated from other languages.
She indicated that software was available for "well under $1,000" per year and that a bank unwilling to spend that little was inviting criticism.
Al
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Al Miller, CRCM
Opinions expressed are my own and not necessarily shared by my employer.