Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban cong cac snippets" » "bang cong cac snippets", "van cong cac snippets", "phan cong cac snippets", "ban cuong cac snippets", "ban cong tac snippets", "ban cong cau 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: (((("ban cong cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban cong cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban cong cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban cong cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.