Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan de mot snippets" » "toan du mot snippets", "toan ke mot snippets", "toan ve mot snippets", "toan de mots snippets", "toan den mot snippets", "toan de mo 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: (((("toan de mot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toan de mot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan de mot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan de mot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.