Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao duc da snippets" » "giao duc da snippets", "tao duoc da snippets", "dao duc dai snippets", "dao duc dao snippets", "dao duc dam 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 da 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 da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao duc da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao duc da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.