Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tri hoa du snippets" » "tri hoan du snippets", "tri hoc du snippets", "thi hoa du snippets", "tri hoa dau snippets", "tri hoa lu snippets", "tri hoa su 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: (((("tri hoa 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: (((("tri hoa du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tri hoa du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tri hoa du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.