Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trai lam du snippets" » "tai lam du snippets", "trai tim du snippets", "trai lam dau snippets", "trai lap du snippets", "trai la du 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: (((("trai lam du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trai lam du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trai lam du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trai lam du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.