Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"con hoa cua snippets" » "cong hoa cua snippets", "con khoa cua snippets", "mon hoa cua snippets", "con hoa chat snippets", "con hoa xuat 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: (((("con hoa 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: (((("con hoa cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con hoa cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con hoa cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.