Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan vu chat snippets" » "nhan su chat snippets", "nhan va chat snippets", "nhat vu chat snippets", "nhan ve chat snippets", "nhan du chat 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: (((("nhan vu chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan vu chat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan vu chat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan vu chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.