Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khai thac du snippets" » "khai thap du snippets", "khai tac du snippets", "khai tham du snippets", "khac thac du snippets", "hai thac du snippets", "thai thac du 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: (((("khai thac du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khai thac du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khai thac du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khai thac du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.