Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan von mot snippets" » "toan ban mot snippets", "toan hoc mot snippets", "toan ho mot snippets", "toan son mot snippets", "toan vien mot snippets", "toan chon mot 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: (((("toan von mot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toan von mot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan von mot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan von mot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.