Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"sach tet doi snippets" » "sach tet code snippets", "sach tien doi snippets", "sach tren doi snippets", "sach viet doi snippets", "sach te doi snippets", "sach theo doi snippets", "sach tiep doi snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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