Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van tin cau snippets" » "van tin code snippets", "van tien cau snippets", "van tan cau snippets", "van thinh cau snippets", "van tinh cau snippets", "van tin cac snippets", "van trinh cau 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: (((("van tin cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van tin cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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