Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tra cuu ca snippets" » "tra cuu code snippets", "tra cau ca snippets", "trau cua ca snippets", "trua cua ca snippets", "tra cuu cac snippets", "tra cuu cua snippets", "tra cuu va 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: (((("tra cuu ca snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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