Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cap van hoi snippets" » "cac van hoi snippets", "cao van hoi snippets", "tap van hoi snippets", "cap van choi snippets", "cap van hoai snippets", "cap van khoi 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: (((("cap van hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cap van hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cap van hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cap van hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.