Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"song van toi snippets" » "hoang van toi snippets", "trong van toi snippets", "duong van toi snippets", "song van tai snippets", "song van thi snippets", "song 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: (((("song 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: (((("song van toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( song van toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("song van toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.