Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tung van toi snippets" » "trung van toi snippets", "tang van toi snippets", "dung van toi snippets", "tung van tai snippets", "tung van thi snippets", "tung van toan 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: (((("tung van toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tung van toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tung van toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tung van toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.