Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quoc co de snippets" » "quoc cao de snippets", "quoc cho de snippets", "duoc co de snippets", "quoc bo de snippets", "quoc co do 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: (((("quoc co 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: (((("quoc co de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quoc co de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quoc co de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.