Perhaps you should try some spelling variations:
"quoc trinh code snippets" » "quoc thinh code snippets", "qua trinh code snippets", "quy trinh code snippets", "quoc trinh cong snippets", "quoc trinh co snippets", "quoc trinh cad snippets", "quoc trinh code slippers"
"python using a snippets" » "python using a slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("python using a snippets") or ("quoc trinh code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using a snippets") OR ("quoc trinh code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using a snippets ) or ( quoc trinh code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using a snippets") or ("quoc trinh code snippets"))) or ("locating bug code snippets"))*.