Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hat van hong snippets" » "hat van phong snippets", "hat van hoang snippets", "hat van huong snippets", "hoat van hong snippets", "ha van hong snippets", "hai van hong 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: (((("hat van hong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hat van hong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hat van hong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat van hong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.