Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh hoi tu slippers" » "danh hoa tu slippers", "dan hoi tu slippers", "danh hoc tu slippers", "danh loi tu slippers", "danh hoi tu slippery", "danh hoi 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: (((("danh hoi 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: (((("danh hoi tu slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh hoi tu slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh hoi tu slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.