Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tham dau do snippets" » "thau dau do snippets", "pham dau do snippets", "tham dam do snippets", "tham cau do snippets", "tham dau co snippets", "tham dao do 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 dau 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: (((("tham dau do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tham dau do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tham dau do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.