Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho phan cho snippets" » "co phan cho snippets", "hoc phan cho snippets", "hoa phan cho snippets", "cho phan co snippets", "cho phan che snippets", "cho han cho 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: (((("cho phan cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho phan cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho phan cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho phan cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.