Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tang van ton snippets" » "dang van ton snippets", "hoang van ton snippets", "trong van ton snippets", "tang van toan snippets", "tang van tan snippets", "tang 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: (((("tang 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: (((("tang van ton snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tang van ton snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tang van ton snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.