Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan hai di snippets" » "phan ha di snippets", "chan hai di snippets", "phan dai di snippets", "phan hai diem snippets", "phan thai doi 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 hai di 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 hai di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan hai di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan hai di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.