Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"van tham lua slippers" » "van thanh lua slippers", "van tuan lua slippers", "van chat lua slippers", "van pham luan slippers", "van thai luan slippers", "van thai luat slippers", "van tham lua slippery", "van tham lua grippers"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs 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 ("van tham lua slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("van tham lua slippers"))) OR ("locating bug code snippets")).
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