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