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