Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lang van ton snippets" » "dang van ton snippets", "tang van ton snippets", "hoang van ton snippets", "lang van toan snippets", "lang van tan snippets", "lang van toi 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: (((("lang van ton snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lang van ton snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lang van ton snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lang van ton snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.