Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"hang quang toc snippets" » "dang quang toc snippets", "hong quang toc snippets", "hang quan toc snippets", "hang quang hoc snippets", "hang quang goc snippets", "hang quang ngoc snippets"
"locating bug code snippets" » "locating bug core snippets", "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 ("hang quang toc snippets"))) or ("locating bug code snippets"))~.
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