Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac nam cao snippets" » "bac nam cao snippets", "cac cam cao snippets", "cac ham cao snippets", "cac nam sao snippets", "cac nam giao 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: (((("cac nam 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: (((("cac nam cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac nam cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac nam cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.