Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"viet ly do snippets" » "tiet ly do snippets", "viet my do snippets", "viet ty do snippets", "viet ly dao snippets", "viet ly doi snippets", "viet ly 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: (((("viet ly do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet ly do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( viet ly do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet ly do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.