Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van thap da snippets" » "van tham da snippets", "van than da snippets", "dan thap da snippets", "van thap du snippets", "van thap ba snippets", "van phap day 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 thap da 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 thap da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van thap da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van thap da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.