Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"trac hoc trinh snippets" » "trac doc trinh snippets", "trac hoc tinh snippets", "trac hoc sinh snippets", "toan hoc trinh snippets", "thai hoc trinh snippets", "toc hoc trinh snippets"
"dung java java snippets" » "dung va java snippets"

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

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