Perhaps you should try some spelling variations:
"using data code snippets" » "using java code snippets", "using sat code snippets", "missing data code snippets", "using rate code snippets", "using data code slippers"
"doan van trinh snippets" » "doan van thinh snippets", "doan van tinh snippets", "doan dan trinh snippets", "doan va trinh snippets", "hoang van trinh snippets", "luan van trinh snippets", "doan van trinh 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 data code snippets") or ("doan van trinh snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using data code snippets") OR ("doan van trinh snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("using data code snippets") or ("doan van trinh snippets"))) or ("locating bug code snippets"))*.