Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"khat va cao snippets" » "khat va code snippets", "chat va cao snippets", "khat ha cao snippets", "hat va cao snippets", "khat va cac snippets", "khat va co snippets", "khat va dao 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: (((("khat va cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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