Perhaps you should try some spelling variations:
"trong tan chat snippets" » "trong tan code snippets", "trong san chat snippets", "trong quan chat snippets", "trong cac chat snippets", "trong van chat snippets", "trong tao chat snippets", "trong ban chat snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java snippets"

Try widening your search to All Fields.

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