Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khanh dan ve snippets" » "khanh van ve snippets", "thanh dan ve snippets", "khanh luan ve snippets", "khanh ban ve snippets", "khanh dan va snippets", "khanh dan viet 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: (((("khanh dan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khanh dan ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khanh dan ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khanh dan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.