Perhaps you should try some spelling variations:
"using ibm code snippets" » "using rbf code snippets", "using lbm code snippets", "using ibm code slippers"
"dung anh tang snippets" » "dung danh tang snippets", "duong anh tang snippets", "dong anh tang snippets", "dung anh bang snippets", "dung anh dang snippets", "dung anh nang snippets", "dung anh tang 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 anh tang snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using ibm code snippets") OR ("dung anh tang snippets"))) OR ("locating bug code snippets")).
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