Perhaps you should try some spelling variations:
"python using raw snippets" » "python using real snippets", "python using a snippets", "python using low snippets", "python using raw slippers"
"van luong tu snippets" » "van duong tu snippets", "van cuong tu snippets", "nang luong tu snippets", "van luong tai snippets", "van luong thi snippets", "van luong tin snippets", "van luong tu slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("python using raw snippets") or ("van luong tu snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using raw snippets") OR ("van luong tu snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using raw snippets ) or ( van luong tu snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using raw snippets") or ("van luong tu snippets"))) or ("locating bug code snippets"))*.