Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao du cau snippets" » "dao duc cau snippets", "dao duy cau snippets", "dao do cau snippets", "dao cu cau snippets", "dao da cau snippets", "dao di cau 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 du 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 du cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao du cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao du cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.