Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van sanh ca snippets" » "van anh ca snippets", "van hanh ca snippets", "van manh ca snippets", "van danh ca snippets", "van sanh va 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 sanh ca 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 sanh ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van sanh ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van sanh ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.