Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban cheo ca snippets" » "han che ca snippets", "ban co ca snippets", "ban chat ca snippets", "ban cheo cua snippets", "ban cheo co snippets", "ban cho ca 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 cheo ca 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 cheo ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban cheo ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban cheo ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.