Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khai hat cu snippets" » "khai hai cu snippets", "thai hat cu snippets", "khai thac cu snippets", "khai hat cua snippets", "khai bat cu snippets", "khai hat ca 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 hat cu 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 hat cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khai hat cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khai hat cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.