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