Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan ve cach snippets" » "nhan va cach snippets", "nhat ve cach snippets", "nhin ve cach snippets", "nhan ve cac snippets", "nhan ve canh 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: (((("nhan ve cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan ve cach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan ve cach snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan ve cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.