Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doc hang cho snippets" » "doc hang code snippets", "doc hanh cho snippets", "hoc hang cho snippets", "oc hang cho snippets", "doc sang cho snippets", "doc han cho snippets", "doc tang cho snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("doc hang cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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