Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh tu son snippets" » "anh tu son snippets", "hanh tu son snippets", "doanh thu son snippets", "danh tu so snippets", "danh tu san snippets", "danh vu son 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: (((("danh tu son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh tu son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh tu son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh tu son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.