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