Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"so van tue snippets" » "so van tu snippets", "so van te snippets", "so van tuyen snippets", "su van tue snippets", "vo van tue 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: (((("so van tue snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("so van tue snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( so van tue snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("so van tue snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.