Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van phap coc snippets" » "ban phap coc snippets", "va phap coc snippets", "van phan coc snippets", "van phap hoc snippets", "van phap cac snippets", "van phap doc 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 phap coc 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 phap coc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van phap coc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van phap coc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.