Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han danh chi snippets" » "van danh chi snippets", "phan dang chi snippets", "nhan dang chi snippets", "han danh cho snippets", "han dinh chi snippets", "han banh chi 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: (((("han danh chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han danh chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han danh chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han danh chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.