Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"va trac doan snippets" » "va tran doan snippets", "va trai doanh snippets", "va trang doan snippets", "va tac doan snippets", "tap trac 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: (((("va trac doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("va trac doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( va trac doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("va trac doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.