Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hay chat cao snippets" » "hay nhat cao snippets", "hay cham cao snippets", "phap chat cao snippets", "hay chat co snippets", "hay chat cho snippets", "hay chat bao 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: (((("hay chat cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hay chat cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hay chat cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hay chat cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.