Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han quoc du snippets" » "han quoc su snippets", "han quoc dung snippets", "han buoc dau snippets", "phan quoc du snippets", "nhan quoc du snippets", "hanh quoc du 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 quoc du 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 quoc du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han quoc du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han quoc du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.