Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"tao nhan data slippers" » "tao nhan dat slippers", "tao nhan dan slippers", "tao nhan vat slippers", "giao nhan data slippers", "ca nhan data slippers", "tue nhan data slippers", "tao nhan data slippery", "tao nhan data grippers"
"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 ("tao nhan data slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("tao nhan data slippers"))) OR ("locating bug code snippets")).
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