Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan anh cad snippets" » "van anh cad snippets", "tuan anh cad snippets", "lan hanh cad snippets", "lan anh ca snippets", "lan anh cam 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 anh cad 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 anh cad snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan anh cad snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan anh cad snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.