Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tham du cao snippets" » "thap du cao snippets", "tham do cao snippets", "pham duc cao snippets", "tham cu cao snippets", "tham du bao snippets", "tham vu cao 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: (((("tham du cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tham du cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tham du cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tham du cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.