Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan anh cha snippets" » "luan danh cha snippets", "tuan anh cha snippets", "lan anh cha snippets", "luan canh cha snippets", "luan anh ha snippets", "luan anh ca 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: (((("luan anh cha snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luan anh cha snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan anh cha snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan anh cha snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.