Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc duc dan slippers" » "hoc duoc dan slippers", "hoc nuoc dan slippers", "hoc thuc dan slippers", "hoc duc tan slippers", "hoc duc dai slippers", "hoc duc dan slippery", "hoc duc dan 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: (((("hoc duc dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( hoc duc dan slippers ) or ( python using java snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("hoc duc dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.