Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"anh nam chon snippets" » "anh nam cho snippets", "anh nam hon snippets", "anh nam chien snippets", "hanh nam chon snippets", "danh nam chon snippets", "anh cam 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: (((("anh nam 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: (((("anh nam chon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( anh nam chon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("anh nam chon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.