Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh ca dan slippers" » "dan ca dan slippers", "doanh cua dan slippers", "danh cho dan slippers", "danh cac dan slippers", "danh ca dao slippers", "danh ca dan slippery", "danh ca dan 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 ca dan 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 ca dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh ca dan slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh ca dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.