Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi he chu snippets" » "khoa he chu snippets", "khoi de chu snippets", "khong he chu snippets", "khoi ho chu snippets", "khoi ve chu snippets", "khoi theo chu 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: (((("khoi he chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi he chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi he chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi he chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.