Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van chi do snippets" » "van chien do snippets", "luan chi do snippets", "van chat do snippets", "van chi dao snippets", "van chi o snippets", "van chi mo 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 chi do 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 chi do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van chi do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van chi do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.