Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi van thi slippers" » "do van thi slippers", "doi va thi slippers", "doi ban thi slippers", "doi van tai slippers", "doi dan thi slippers", "doi van thu slippers", "doi van thi slippery", "doi van thi grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi van thi slippers") OR ("python using java snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( doi van thi slippers ) or ( python using java snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("doi van thi slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.