Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trung hoa do snippets" » "trung hoc do snippets", "trung ha do snippets", "trung hoa doi snippets", "trung hoa doc snippets", "trung hoa don 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: (((("trung hoa do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trung hoa do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trung hoa do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trung hoa do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.