Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"pha hang cau snippets" » "pha hang code snippets", "pham hang cau snippets", "nha hang cau snippets", "pham thang cau snippets", "pha hang dau snippets", "pha hang ca snippets", "pha nhung cau 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: (((("pha hang cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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