Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"python using java snippets" » "python using data snippets", "python using java slippers"
"van toi duc snippets" » "van tai duc snippets", "van thi duc snippets", "van toan duc snippets", "van ton duc snippets", "van oi duc snippets", "van toi du snippets", "van toi duc slippers"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("van toi duc snippets") or ("python using java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van toi duc snippets") OR ("python using java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( van toi duc snippets ) or ( python using java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van toi duc snippets") or ("python using java snippets"))) or ("locating bugs code snippets"))*.