Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van hung chu snippets" » "van dung chu snippets", "manh hung chu snippets", "van duong chu snippets", "van nhung chu snippets", "van hung thu snippets", "van chung chou 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 hung chu 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 hung chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van hung chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van hung chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.