Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets", "using java code slippers"
"hung pham san snippets" » "nhung pham san snippets", "nhung phat san snippets", "dung phan san snippets", "hung pham van snippets", "hung pha san snippets", "hung pham lan snippets", "hung pham san slippers"
"locating bug code snippets" » "locating bug core 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 java code snippets") or ("hung pham san snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("hung pham san snippets"))) OR ("locating bug code snippets")).
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