Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van hanh toc snippets" » "van hanh code snippets", "van thanh toc snippets", "ban hanh toc snippets", "van anh toc snippets", "van hanh tot snippets", "van hanh thuoc snippets", "van hanh duoc 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: (((("van hanh toc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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