Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc tien cua snippets" » "hoc tieng cua snippets", "hoc hien cua snippets", "hoc vien cua snippets", "hoc trien cua snippets", "hoc tiep cua snippets", "hoc khien cua snippets"
"locating bug code snippets" » "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: (((("hoc tien cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc tien cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("hoc tien cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.