Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"python using java snippets" » "python using data snippets", "python using java slippers"
"han san van snippets" » "hanh san van snippets", "hai san van snippets", "tan san van snippets", "han tan van snippets", "han luan van snippets", "han tran van snippets", "han san van slippers"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using java snippets") or ("han san van snippets"))) or ("locating bugs code snippets"))~.
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