Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kiem mot con snippets" » "kiem mon con snippets", "kiem soat con snippets", "hieu mot con snippets", "kiem mot cong snippets", "kiem mot co snippets", "kiem moi con 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: (((("kiem mot con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kiem mot con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kiem mot con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kiem mot con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.