Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"khat thu anh snippets" » "khuat thi anh snippets", "khanh thu anh snippets", "phap thu anh snippets", "khat thuy anh snippets", "khat thu canh snippets", "khat thu oanh snippets", "khat thu anh slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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