Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan thon que snippets" » "dan than que snippets", "dan tho que snippets", "dan trong que snippets", "dan thong que snippets", "dan hon que snippets", "dan thoi quen 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: (((("dan thon 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: (((("dan thon que snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan thon que snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan thon que snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.