Perhaps you should try some spelling variations:
"ying khang a snippets" » "ying zhang a snippets", "dung khang a snippets", "ming zhang a snippets", "ying chang ha snippets", "ying khan gia snippets", "ying khang cu snippets", "ying khang a slippers"
"python using java snippets" » "python using data snippets", "python using java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("ying khang a snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
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