Perhaps you should try some spelling variations:
thanh chau » thanh cha, thanh cham, thanh chu
hieu xanh » chieu xanh, hieu manh, hieu nganh
cong cong » cong dong, trong cong, dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
tung cua » trung cua, tuong cua, tang cua
dung cua » dung luan, dung cho
cong tan » cong tac, cong san, cong thanh
phan cau » phan dau, phan cac, phan tu

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 ((tung cua) OR (dung cua)) cong cong tan ((thanh chau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - thanh ((tung cua) OR (dung cua)) cong cong tan ((thanh chau) OR (phan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - thanh ((tung cua) OR (dung cua)) cong cong tan ((thanh chau) or (phan cau))".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh ((tung cua) OR (dung cua)) cong cong tan ((thanh chau) or (phan cau))*.