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