Perhaps you should try some spelling variations:
"using ibm code snippets" » "using rbf code snippets", "using lbm code snippets", "using ibm code slippers"
"dung quan hai snippets" » "dung quang hai snippets", "dung luan hai snippets", "luong quan hai snippets", "dung quan ha snippets", "dung qua hai snippets", "dung quan tai snippets", "dung quan hai 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 ("dung quan hai snippets"))) or ("locating bug code snippets"))~.
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