Perhaps you should try some spelling variations:
"thi trinh quan snippets" » "thi tinh quang snippets", "thi trinh luat snippets", "thi trinh han snippets", "tho trinh quan snippets", "thi thanh quan snippets", "thi minh quan snippets", "thi trinh quan slippers"
"python using a snippets" » "python using a 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.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("thi trinh quan snippets") or ("python using a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi trinh quan snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("thi trinh quan snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.