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