Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"dau tang van snippets" » "dam tang van snippets", "dau bang van snippets", "dau quang van snippets", "dau dang van snippets", "dau hoang van snippets", "dau trong van snippets", "dau tang van slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("dau tang van snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dau tang van snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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