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