Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"tri hoc quoc snippets" » "tri hoc nuoc snippets", "tri hoc duoc snippets", "tri hoc thuoc snippets", "triet hoc quoc snippets", "tri thuc quoc snippets", "thai hoc quoc snippets"

Try widening your search to All Fields.

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