Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java grippers" » "python using data grippers", "python using java slippers"
"quoc hoc dai snippets" » "quoc hoi dai snippets", "duoc hoc dai snippets", "buoc hoc dai snippets", "quoc hoc dan 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 hoc dai snippets") OR ("python using java grippers"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"quoc hoc dai snippets\") OR (\"python using java grippers\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( quoc hoc dai snippets ) OR ( python using java grippers ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quoc hoc dai snippets") OR ("python using java grippers"))) OR ("locating bug core snippets"))*.