Perhaps you should try some spelling variations:
dthanh nhan » doanh nhan, thanh phan, danh nhan
thanh nhan » thanh phan, thanh san, thanh toan
hien xanh » hien hanh, hien nhanh, chieu xanh
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
than va » thanh va, nhan va, toan va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - ((dthanh nhan) or (thanh nhan)) va nhung ((cong dan) or (cong tan)) than va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((dthanh nhan) OR (thanh nhan)) va nhung ((cong dan) OR (cong tan)) than va.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((dthanh nhan) or (thanh nhan)) va nhung ((cong dan) or (cong tan)) than va*.