Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data snippets"
"nha hoc sinh snippets" » "nha thuoc sinh snippets", "khoa hoc sinh snippets", "nha nuoc sinh snippets", "nha hoc dinh snippets", "nha hoc minh snippets", "nha hoc kinh snippets"

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

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