Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nang van ho snippets" » "dang van ho snippets", "tang van ho snippets", "lang van ho snippets", "nang van hoa snippets", "nang van hoc snippets", "nang van hoe 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: (((("nang van ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nang van ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang van ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang van ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.