Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"toc trinh su snippets" » "doc trinh su snippets", "hoc trinh su snippets", "tra trinh su snippets", "toc trinh tu snippets", "toc trinh san snippets", "toc trinh cau snippets"

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

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