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