Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap day toi snippets" » "phap dan toi snippets", "phap day loi snippets", "phap day thi snippets", "phan day toi snippets", "pham day 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: (((("phap day toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phap day toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap day toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap day toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.