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