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