Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kenh vu cong snippets" » "kenh vi cong snippets", "kenh va cong snippets", "kenh tu cong snippets", "kenh cua cong 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: (((("kenh vu cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kenh vu cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kenh vu cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kenh vu cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.