Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets", "using java code slippers"
"tran hung manh snippets" » "tran hong manh snippets", "tran quang manh snippets", "tran hoang manh snippets", "tran nhung manh snippets", "tran hung anh snippets", "tran tung manh snippets", "tran hung manh 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 ("tran hung manh snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("tran hung manh snippets"))) OR ("locating bug code snippets")).
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