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