Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi de hoat snippets" » "khi de hoat snippets", "khoa de hoat snippets", "khoi he hoat snippets", "khoi ve hoat snippets", "khoi de hoan snippets", "khoi dien hoat 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 de hoat 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 de hoat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi de hoat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi de hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.