Perhaps you should try some spelling variations:
"trinh quan co snippets" » "tinh quang co snippets", "trinh luat co snippets", "trinh han co snippets", "trinh quan so snippets", "trinh quan ao snippets", "trinh quan ho snippets"
"van ha code snippets" » "van hoa code snippets", "van chat code snippets", "van hanh code snippets", "van ha core snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code 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 quan co snippets") or ("van ha code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh quan co snippets") OR ("van ha code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh quan co snippets ) or ( van ha code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh quan co snippets") or ("van ha code snippets"))) or ("locating bug code snippets"))*.