Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan tach da snippets" » "phan tich da snippets", "phan thanh da snippets", "phan tap da snippets", "phan tac da snippets", "phan sach dao snippets", "phan sach dat 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 tach da 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 tach da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan tach da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan tach da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.