Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban thi tran slippers" » "ban thi trang slippers", "ban thi thanh slippers", "ban thi lan slippers", "dan thi tran slippers", "van thi tran slippers", "can thi tran slippers", "ban thi tran slippery", "ban thi tran 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: (((("ban thi tran slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban thi tran slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban thi tran slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban thi tran slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.