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