Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thong su con snippets" » "thong tu con snippets", "thong cua con snippets", "thong qua con snippets", "thong su cong snippets", "thong su co snippets", "thong su can 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: (((("thong su con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thong su con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thong su con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thong su con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.