Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khat san chi snippets" » "khach san chi snippets", "thuat san chi snippets", "khai sang chi snippets", "khat van chi snippets", "khat luan chi snippets", "khat toan chi 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: (((("khat san chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khat san chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khat san chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khat san chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.