Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc tang dan slippers" » "duc thang dan slippers", "duc tan dan slippers", "tuc tang dan slippers", "duc tang van slippers", "duc tung dan slippers", "duc tang luan slippers", "duc tang dan slippery", "duc tang 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: (((("duc tang 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: (((("duc tang dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc tang dan slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc tang dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.