Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoe con cho snippets" » "khoe cong cho snippets", "khoa cong cho snippets", "khong con cho snippets", "khoe ton cho snippets", "khoe con chi 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: (((("khoe con cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoe con cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("khoe con cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.