Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"voi dan hoan snippets" » "voi van hoan snippets", "voi dan hoat snippets", "voi dan toan snippets", "hoi dan hoan snippets", "voi can hoan snippets", "doi dan hoan 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: (((("voi dan 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: (((("voi dan hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( voi dan hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("voi dan hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.