Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sac danh di snippets" » "sach danh di snippets", "tac danh di snippets", "sac dan di snippets", "sac danh du snippets", "sac xanh di snippets", "sac danh dien 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: (((("sac danh 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: (((("sac danh di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sac danh di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sac danh di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.