Your goal is to retrieve lots of highly relevant literature, and to avoid retrieving much irrelevant literature. A concept table helps you build out a search strategy with textwords and controlled vocabulary.
|
Concept |
A |
B |
C |
|
Subject headings |
SH1 SH2 |
SH3 |
SH4 SH5 |
|
Textwords |
TW1 TW2* |
TW3 TW4 |
TX5 TX6 |
You could combine all the terms from your concept table in a single query -- if you use nesting and operators.
(SH1 or SH2 or TW1 or TW2*) and (SH3 or TW3 or TW4) and (SH4 or SH5 or TW5 or TX6)
You can also create a search line by line. I find this easier to follow and easier to edit.
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All three of these search strategies will create the same final set.