Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu xanh » chieu xanh, hieu manh, hieu nganh
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
phan cau » phan dau, phan cac, phan tu
toan tap » toan ban

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 cua nhung ((cong ban) or (cong san)) ((phan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - thanh trung cua nhung ((cong ban) OR (cong san)) ((phan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh trung cua nhung ((cong ban) or (cong san)) ((phan cau) or (toan tap))*.