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