Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using data grippers" » "python using java grippers", "python using sat grippers", "python missing data grippers", "python using data slippers"
"quoc hoi dan snippets" » "quoc hoa dan snippets", "quoc hoc dan snippets", "quoc hoi dap snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("quoc hoi dan snippets") OR ("python using data grippers"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"quoc hoi dan snippets\") OR (\"python using data grippers\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( quoc hoi dan snippets ) OR ( python using data grippers ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quoc hoi dan snippets") OR ("python using data grippers"))) OR ("locating bug core snippets"))*.