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