Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc cho de snippets" » "hoc cao de snippets", "hoc pho de snippets", "hoc co de snippets", "hoc cho he snippets", "hoc cho xe 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: (((("hoc cho de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc cho de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc cho de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc cho de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.