Perhaps you should try some spelling variations:
"trinh cham tinh snippets" » "trinh chat tinh snippets", "trinh chao tinh snippets", "trinh han tinh snippets", "trinh chau tinh snippets", "trinh cham binh snippets", "trinh ha tinh snippets", "trinh cham tinh slippers"
"dung cho code snippets" » "dung cho cong snippets", "dung cfd code snippets", "dung cho con snippets", "dung cho code slippers"
"locating bug code snippets" » "locating bug code slippers", "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 cham tinh snippets") or ("dung cho code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh cham tinh snippets") OR ("dung cho code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh cham tinh snippets ) or ( dung cho code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh cham tinh snippets") or ("dung cho code snippets"))) or ("locating bug code snippets"))*.