Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung qua cap snippets" » "duong qua cap snippets", "dung quan cap snippets", "dung cua cap snippets", "dung qua cac snippets", "dung qua ap snippets", "dung qua ca 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: (((("dung qua cap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung qua cap snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung qua cap snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung qua cap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.