Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung luc thi slippers" » "dong luc thi slippers", "dung luan thi slippers", "trung luc thi slippers", "dung luc tai slippers", "dung luc thi slippery", "dung luc thi grippers"
"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: (((("dung luc thi slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung luc thi slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung luc thi slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung luc thi slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.