Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"pha hoc vien snippets" » "pha hoc hien snippets", "pha hoc viet snippets", "pha hoc tieng snippets", "phap hoc vien snippets", "phau hoc vien snippets", "nha hoc vien snippets"

Try widening your search to All Fields.

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