Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tiep doi cau snippets" » "tiep doi code snippets", "tiep do cau snippets", "tiep noi cau snippets", "tiep thi cau snippets", "tiep doi dau snippets", "tiep di cau snippets", "tiep doi ca 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: (((("python using java snippets") or ("tiep doi cau snippets"))) or ("locating bug core snippets"))~.
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