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