Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"van viet trinh snippets" » "van viet trung snippets", "van viet thanh snippets", "van viet trong snippets", "san viet trinh snippets", "gian viet trinh snippets", "tran viet trinh snippets", "van viet trinh slippers"
"dung va java snippets" » "dung java java snippets", "dung va java slippers"

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: (((("van viet trinh snippets") or ("dung va java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van viet trinh snippets") OR ("dung va java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( van viet trinh snippets ) or ( dung va java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van viet trinh snippets") or ("dung va java snippets"))) or ("locating bugs code snippets"))*.