Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van hinh anh slippers" » "van chinh anh slippers", "van thinh anh slippers", "van minh anh slippers", "van thich anh slippers", "van hinh anh slippery", "van hinh 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 hinh 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 hinh anh slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van hinh anh slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van hinh anh slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.