Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den qua noi snippets" » "den xua noi snippets", "dien quan noi snippets", "dan quan noi snippets", "den qua loi snippets", "den chua noi snippets", "den qua ngon 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: (((("den qua noi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("den qua noi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den qua noi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den qua noi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.