Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat van cuc snippets" » "nhat ban cuc snippets", "nha van cuc snippets", "nhan van cuc snippets", "nhat van duc snippets", "nhat van luc snippets", "nhat van cu 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 cuc 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 cuc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhat van cuc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat van cuc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.