Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"from de hoan snippets" » "from e hoan snippets", "from bee hoan snippets", "from pre hoan snippets", "from le hoang snippets", "from duc hoan snippets", "from ve hoang 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: (((("from de hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("from de hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( from de hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("from de hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.