Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van gioi cam snippets" » "van giai cam snippets", "vien gioi cam snippets", "luan gioi cam snippets", "van gioi can snippets", "van gioi cau snippets", "van gioi lam 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 gioi cam 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 gioi cam snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van gioi cam snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van gioi cam snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.