Perhaps you should try some spelling variations:
"using ibm code snippets" » "using rbf code snippets", "using lbm code snippets", "using ibm code slippers"
"doan tinh va snippets" » "doan hinh va snippets", "ban tinh va snippets", "quan tinh va snippets", "doan tich va snippets", "doan trinh van snippets", "doan trinh vat snippets", "doan tinh va slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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