Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuy van son snippets" » "thuy san son snippets", "thuc van son snippets", "chu van son snippets", "thuy van dong snippets", "thuy van cong snippets", "thuy van sung 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: (((("thuy van son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thuy van son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuy van son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuy van son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.