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