Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong chat de snippets" » "cong nhat de snippets", "cong cua de snippets", "cong ha de snippets", "cong chat deo snippets", "cong chat di 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 chat 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: (((("cong chat de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong chat de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong chat de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.