Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van sung don snippets" » "van dung don snippets", "van hung don snippets", "van duong don snippets", "van sung dong snippets", "van song don snippets", "van vung dong 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 sung don 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 sung don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van sung don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van sung don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.