Perhaps you should try some spelling variations:
"python using code snippets" » "python using cfd snippets", "python using one snippets"
"danh cac ho snippets" » "dinh cac ho snippets", "danh ca ho snippets", "hanh cac ho snippets", "danh cac hop snippets", "danh cac hoc snippets", "danh cac co snippets"
"locating bug core snippets" » "locating bug code snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("danh cac ho snippets") or ("python using code snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh cac ho snippets") OR ("python using code snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( danh cac ho snippets ) or ( python using code snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh cac ho snippets") or ("python using code snippets"))) or ("locating bug core snippets"))*.