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