Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"trinh toan co snippets" » "trinh toan code snippets", "tinh toan co snippets", "thanh toan co snippets", "trinh han co snippets", "trinh toan cao snippets", "trinh toan ho snippets", "trinh toan hoc snippets"
"hang java java snippets" » "hang va java snippets"

Try widening your search to All Fields.

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

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