Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan huy cha snippets" » "phan tu cha snippets", "phan xay cha snippets", "van huy cha snippets", "phan quy chau snippets", "phan huy khoa snippets", "phan hay cham 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 huy cha 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 huy cha snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan huy cha snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan huy cha snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.