Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc thong o snippets" » "duc thuong o snippets", "duc thang o snippets", "duy thong o snippets", "duc thong ke snippets", "duc thong tu snippets", "duc thong va 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: (((("duc thong o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc thong o snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc thong o snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc thong o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.