Perhaps you should try some spelling variations:
thanh trung » thanh tung
khong cang » thong cong, hong bang, khong dung
trung cua » truong cua, trung tuan, trung cap
cua khong » hua khong, cua phuong, cua thuong
doc hieu » toc thieu, hoc thieu, hoc hien
cang dan » cong dan, tang dan, canh dan
chan cau » can cau, chinh cau, nhanh cau
phan cau » phan dau, phan cac, phan tu
doi chi » doi khi

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) or (doi chi)) xanh - thanh trung cua khong cang dan ((chan cau) OR (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (doi chi)) xanh - thanh trung cua khong cang dan ((chan cau) OR (phan cau))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) or (doi chi)) xanh - thanh trung cua khong cang dan ((chan cau) OR (phan cau))*".