Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach dat voi snippets" » "sach dao voi snippets", "sach danh voi snippets", "sach bai voi snippets", "sach dat boi snippets", "sach da voi 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: (((("sach dat voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sach dat voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach dat voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach dat voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.