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