Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"nhung tap so snippets" » "nhung tap code snippets", "nhung bai so snippets", "nhung cau so snippets", "chung ta so snippets", "nhung tap co snippets", "nhung tai so snippets", "nhung dap so 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: (((("nhung tap so snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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