Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tan voi con snippets" » "than voi con snippets", "ban voi con snippets", "tan hoi con snippets", "tan voi cong snippets", "tan voi chon snippets", "tan voi can 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: (((("tan voi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tan voi con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan voi con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan voi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.