Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van gia cac snippets" » "van giao cac snippets", "van giam cac snippets", "van gian cac snippets", "van giai cac snippets", "van giua cac 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 gia 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 gia cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van gia cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van gia cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.