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