Perhaps you should try some spelling variations:
"locating bung code snippets" » "locating bug code snippets", "locating bung code slippers"
"using ibm code snippets" » "using rbf code snippets", "using lbm code snippets", "using ibm code slippers"
"manh dung code snippets" » "manh hung code snippets", "manh tung code snippets", "anh dung code snippets", "manh dung cong snippets", "manh dung co snippets", "manh dung de snippets", "manh dung code slippers"

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 ("manh dung code snippets"))) or ("locating bung code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using ibm code snippets") OR ("manh dung code snippets"))) OR ("locating bung code snippets")).
• Removing quotes may allow a broader search: (((( using ibm code snippets ) or ( manh dung code snippets ))) or ( locating bung code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using ibm code snippets") or ("manh dung code snippets"))) or ("locating bung code snippets"))*.