Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan ve hoat snippets" » "nhan va hoat snippets", "nhat ve hoat snippets", "nhin ve hoat snippets", "nhan che hoat snippets", "nhan van hoat 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 hoat 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 hoat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan ve hoat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan ve hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.