Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van hoa lan slippers" » "van hoa lang slippers", "van hoa luan slippers", "van hoa lanh slippers", "van hoa lan slippery", "van hoa lan 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 hoa lan 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 hoa lan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van hoa lan slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van hoa lan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.