Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khu tap chon snippets" » "khu tap cho snippets", "khu tac chong snippets", "khu tap hop snippets", "khau tai chon snippets", "thu thap chon snippets", "thuc tap chon 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: (((("khu tap chon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khu tap chon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khu tap chon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khu tap chon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.