Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van sang cac snippets" » "van nang cac snippets", "van sung cac snippets", "van hang cac snippets", "van bang cac snippets", "van sang tac 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 sang cac 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 sang cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van sang cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van sang cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.