Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tho dan voi snippets" » "thuc dan voi snippets", "choi dan voi snippets", "tho dan hoi snippets", "tho ban voi snippets", "tho 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: (((("tho dan 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: (((("tho dan voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tho dan voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tho dan voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.