Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"toc hung thu snippets" » "toc nung thu snippets", "hoc hung thu snippets", "toc muong thu snippets", "toc ung thu snippets", "toc dung thu snippets", "toc hong thu snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("toc hung thu snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc hung thu snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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