Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"can hoc duoc snippets" » "can hoc nuoc snippets", "can hoa duoc snippets", "can hoc dung snippets", "van hoc duoc snippets", "dan hoc duoc snippets", "cao hoc duoc snippets"

Try widening your search to All Fields.

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