Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"ban van hung snippets" » "ban van dung snippets", "ban manh hung snippets", "ban van duong snippets", "ban dan hung snippets", "ban va hung snippets", "tan van hung snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("ban van hung snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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