Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tong va cao snippets" » "thong va cao snippets", "trong va cao snippets", "tong van cao snippets", "tong va cac snippets", "tong va co snippets", "tong va dao 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: (((("tong va 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: (((("tong va cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tong va cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tong va cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.