Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu hon don snippets" » "thu hoan don snippets", "thu hong don snippets", "thu hoi don snippets", "thu hoa don snippets", "thu hon loan snippets", "thu hong son 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: (((("thu hon don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu hon don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu hon don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu hon don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.