Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat tien doi snippets" » "dat thien doi snippets", "dau tien doi snippets", "tat tien doi snippets", "dat bien doi snippets", "dat tien do snippets", "dat kien doi 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: (((("dat tien doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat tien doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat tien doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat tien doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.