Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dong ban van snippets" » "dong bang van snippets", "dong san van snippets", "dong bac van snippets", "dong ban dan snippets", "dong ban va snippets", "dong tan van snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("dong ban van snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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