Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luong qua su slippers" » "luong quan su slippers", "duong qua su slippers", "luong cua su slippers", "luong qua su slippery", "luong qua 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: (((("luong qua 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: (((("luong qua su slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luong qua su slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong qua su slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.