Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using java code slippers" » "using data code slippers"
"cong dot anh snippets" » "cong mot anh snippets", "cong dong anh snippets", "cong doan anh snippets", "cong do anh snippets", "cong dat anh snippets", "cong doi anh 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: (((("using java code slippers") OR ("cong dot anh snippets"))) OR ("locating bugs code snippets"))~.
• Removing quotes may allow a broader search: (((( using java code slippers ) or ( cong dot anh snippets ))) or ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code slippers") or ("cong dot anh snippets"))) or ("locating bugs code snippets"))*.