Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ham khoi de snippets" » "ham khai de snippets", "pham khoa de snippets", "kham khoa de snippets", "ham khi de snippets", "ham khoa de snippets", "ham khoi he 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: (((("ham khoi de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ham khoi de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ham khoi de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ham khoi de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.