Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nha cao cua snippets" » "nha ca cua snippets", "nha co cua snippets", "nha cau cua snippets", "nhan cao cua snippets", "nhat cao 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: (((("nha cao 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: (((("nha cao cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nha cao cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nha cao cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.