Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mach hoc cau snippets" » "cach hoc cau snippets", "dich hoc cau snippets", "anh hoc cau snippets", "mach hoc cao snippets", "mach hoc cac snippets", "mach hoc can 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: (((("mach hoc cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mach hoc cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("mach hoc cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.