Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong dau dot snippets" » "cong dan dot snippets", "cong cau dot snippets", "cong da dot snippets", "cong dau mot snippets", "cong dau do 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 dau dot 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 dau dot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong dau dot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong dau dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.