Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lap pham voi snippets" » "lap phap voi snippets", "tap pham voi snippets", "loai pham voi snippets", "lap pham vi snippets", "lap cham voi snippets", "lap pham doi 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: (((("lap pham voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lap pham voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lap pham voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lap pham voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.