Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van chuan do snippets" » "van thuan do snippets", "van huan do snippets", "van chuyen do snippets", "van chuan dao snippets", "van chuan co snippets", "van chuan doan 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 chuan do 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 chuan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van chuan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van chuan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.