Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong cau doi snippets" » "cong cu doi snippets", "cong chuc doi snippets", "thong cau doi snippets", "cong cau hoi snippets", "cong cau do snippets", "cong cau noi 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 cau doi 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 cau doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong cau doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong cau doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.