Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan va moi snippets" » "nhan tai moi snippets", "nhan dan moi snippets", "nhan tao moi snippets", "nhan va mot snippets", "nhan ve moi snippets", "nhan va mo 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: (((("nhan va moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan va moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan va moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan va moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.