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