Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao duc dong snippets" » "dao duoc dong snippets", "dao duc dung snippets", "dao duc cong snippets", "giao duc dong snippets", "tao duoc dong 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: (((("dao duc dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao duc dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao duc dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao duc dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.