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