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