Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"trinh cam thuc snippets" » "trinh cham thuc snippets", "trinh cau thuc snippets", "trinh tam thuc snippets", "trinh am thuc snippets", "trinh nam thuc snippets", "trinh cam thu snippets"
"locating bug core snippets" » "locating bug code snippets"

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java code snippets") or ("trinh cam thuc snippets"))) or ("locating bug core snippets"))~.
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