Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"phan nhan chat snippets" » "chan nhan chat snippets", "pham nhan chat snippets", "phan nha chat snippets", "phan nhan chan snippets", "phan phan chat snippets", "phan chuan chat 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 ("phan nhan chat snippets"))) or ("locating bug core snippets"))~.
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