Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duong ly do snippets" » "duong ky do snippets", "huong ly do snippets", "dong ly do snippets", "duong ly dao snippets", "duong ly doi snippets", "duong 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: (((("duong 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: (((("duong ly do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong ly do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong ly do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.