Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi tap cac snippets" » "khu tap cac snippets", "khi ap cac snippets", "khi ta cac snippets", "khi tai cac snippets", "khi tap trac 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: (((("khi tap cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khi tap cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("khi tap cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.