I am quite new to the e-utilities from ncbi. What I am trying to do is to get mesh terms of a publication whose title is used as the main input. For example, the searched title is:

Use of "foot-bank" tissue to cover amputation stumps. Apropos of 4 cases

and when I manually search for it, I see that it exists here: https://pubmed.ncbi.nlm.nih.gov/9515138/

However when I do the same search via esearch as below, it returns no results.

https://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi?db=pmc&term=Use%20of%20foot%20bank%20tissue%20to%20cover%20amputation%20stumps.%20Apropos%20of%204%20cases&field=title

My aim is to

1) first reach pmc id presented under IdList --> esearch

2) and convert it to pmid --> e.g., https://www.ncbi.nlm.nih.gov/pmc/utils/idconv/v1.0/?tool=my_tool&email=my_email@example.com&ids=PMC5644846

3) and use it in the efetch to obtain mesh terms, if any --> https://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi?db=pubmed&id=9515138&retmode=xml

So what am I doing wrong? In some titles the above-mentioned steps are quite smooth and I can reach the mesh terms. But for some of them, esearch returns nothing.

What are the other possibilities to be able to link a publication with its mesh terms?

Thanks in advance!