Browsing (either book stacks or within an online interface) is a valuable avenue of access to information that enables a researcher to recognize what they do not know how to ask for (when limited only to a keyword search box).
Like a superhero each database has its own origin story and set of special powers. These can be discerned by paying close attention to the fields that each record contains.
What is a controlled vocabulary (aka, thesaurus, descriptors, subject headings) and how is it useful to a researcher?
Keyword searching is the best search strategy when an online resource:
a) has no controlled vocabulary
b) contains multiple types of dissimilar records
Effective and efficient use of keyword searching requires the researcher to understand:
a) logical connectors
b) proximity connectors
d) exact phrase searching
e) parenthetical groupings