Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu xanh » chieu xanh, hieu manh, hieu nganh
tong cong » trong cong, cong cong, dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
trung va » truong va, trang va, trung ha
cong san » cong tac
san than » sang than, san thanh, ban than
than cao » toan cao, thai cao, than cap
va tong » va thong, va tuong, va trong

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - thanh trung va tong cong san than cao~.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh trung va tong cong san than cao*.