Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van ha da snippets" » "van hoa da snippets", "van chat da snippets", "van hanh da snippets", "van nha da snippets", "van ha dac snippets", "van va da 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: (((("van ha 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: (((("van ha da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van ha da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van ha da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.