Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"khanh van than snippets" » "thanh van than snippets", "khanh vinh than snippets", "hanh va than snippets", "khanh van thanh snippets", "khanh van thang snippets", "khanh van tuan snippets"
"locating bug core snippets" » "locating bug code snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

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