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