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