Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nghia lap da snippets" » "nghia la da snippets", "nghia lai da snippets", "nghia mac da snippets", "nghia lap dat snippets", "nghia lap dan snippets", "nghia lap va 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: (((("nghia lap 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: (((("nghia lap da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nghia lap da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nghia lap da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.