Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban den cau snippets" » "ban dan cau snippets", "quan den cau snippets", "ban den cac snippets", "ban den cam snippets", "ban diem 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 den cau 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 den cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban den cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban den cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.