Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"voi luat hoi snippets" » "hoi luat hoi snippets", "bo luat hoi snippets", "hoi luan hoi snippets", "voi luat moi snippets", "voi luat so snippets", "voi luat dai 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: (((("voi luat hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("voi luat hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( voi luat hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("voi luat hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.