Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dang hai so snippets" » "dang khai so snippets", "hang hai so snippets", "dung hai so snippets", "dang dai so snippets", "dang tai so snippets", "dang thai son 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: (((("dang hai so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang hai so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang hai so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang hai so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.