Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chap khe hoi snippets" » "phap che hoi snippets", "cam khe hoi snippets", "chat khi hoi snippets", "chap khi hoi snippets", "chap khien hoi snippets", "chap khi khoi snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("chap khe hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chap khe hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("chap khe hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.