Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"khen ca thu snippets" » "khien cau thu snippets", "khan cap thu snippets", "when can thu snippets", "khen cac thu snippets", "khen cam thu snippets", "khen ca tru snippets", "khen ca thu 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: (((("khen ca thu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khen ca thu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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