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