Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan khung co snippets" » "lan hung co snippets", "luan chung co snippets", "lan phuong co snippets", "lan khong co snippets", "lan chung co snippets", "lan chung cho 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: (((("lan khung co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lan khung co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan khung co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan khung co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.