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