Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"den hang cau snippets" » "den hang code snippets", "den nang cau snippets", "den bang cau snippets", "den hanh cau snippets", "den hang dau snippets", "den hang ca snippets", "den 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: (((("den hang cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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