Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"manh phung cao snippets" » "manh hung cao snippets", "manh phong cao snippets", "minh phuong cao snippets", "manh phung van snippets", "manh nhung cau snippets", "manh phung ho snippets"
"locating bug core snippets" » "locating bug 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 ("manh phung cao snippets"))) or ("locating bug core snippets"))~.
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