Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"hoang hang cau snippets" » "hang hang cau snippets", "hoang lang cau snippets", "hoang dang cau snippets", "hoang hang dau snippets", "hoang hang ca snippets", "hoang nhung cau snippets"
"locating bug core snippets" » "locating bug code snippets"

Try widening your search to All Fields.

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