Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan lanh voi snippets" » "dan canh voi snippets", "dan hanh voi snippets", "dat lanh voi snippets", "dan hanh vi snippets", "dan lanh hai 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: (((("dan lanh 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: (((("dan lanh voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan lanh voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan lanh voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.