Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van than va slippers" » "van thanh va slippers", "van thang va slippers", "van tuan va slippers", "van nhan va slippers", "van toan va slippers", "van than va slippery", "van than va 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 than va 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 than va slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van than va slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van than va slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.