Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan von que snippets" » "toan ban que snippets", "toan hoc que snippets", "toan ho que snippets", "toan hon que snippets", "toan van que snippets", "toan thon que 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: (((("toan von que snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toan von que snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan von que snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan von que snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.