Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat tang da snippets" » "nhat trang da snippets", "nhat tan da snippets", "nham tang da snippets", "nhat tang dan snippets", "nhat tang dam snippets", "nhat tang ma 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: (((("nhat tang da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhat tang da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhat tang da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat tang da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.