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