To find a well-formed formula (wff) from a truth table, identify rows where the wff evaluates to true and create a conjunction of atomic propositions that are true, while negating those that are false. Combine these conjunctions using disjunction to form the complete wff. The discussion clarifies that the symbols used, such as "^" for conjunction and "-" for negation, can be interchanged with "&" and "~" respectively, and emphasizes that grouping with parentheses is not strictly necessary for clarity. Simplification techniques are suggested, such as recognizing patterns in the truth values to shorten the wff. Additionally, an alternative method for constructing a wff involves focusing on rows where the wff is false, using negation to derive the final expression.