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