Perhaps you should try some spelling variations:
"cong trinh phap snippets" » "cong trinh phan snippets", "cong trinh han snippets", "cong trinh chat snippets"
"using ibm code slippers" » "using rbf code slippers", "using lbm code slippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using ibm code slippers") or ("cong trinh phap snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using ibm code slippers") OR ("cong trinh phap snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using ibm code slippers ) or ( cong trinh phap snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using ibm code slippers") or ("cong trinh phap snippets"))) or ("locating bug code snippets"))*.