Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc dai code slippers" » "luc dai de slippers", "luc dai cong slippers", "luoc dai code slippers", "luc tai code slippers", "duc dai code slippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code 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: (((("luc dai code slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc dai code slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc dai code slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc dai code slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.