Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan trac de snippets" » "phan tap de snippets", "phan cac de snippets", "phan tan de snippets", "phan tac de snippets", "phan trac dia snippets", "phan trang de 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 trac de 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 trac de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan trac de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan trac de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.