Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van ba hoa snippets" » "van ban hoa snippets", "van bao hoa snippets", "van bac hoa snippets", "van ma hoa snippets", "van va hoa 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 ba hoa 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 ba hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van ba hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van ba hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.