Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pho dong den snippets" » "pho uong den snippets", "pho thong den snippets", "phan dong den snippets", "pho dong dien snippets", "pho don den snippets", "pho dong dan 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: (((("pho dong den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pho dong den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pho dong den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pho dong den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.