Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
hieu xanh » chieu xanh, hieu manh, hieu nganh
trung cua » truong cua, trung cap, dung cua
tong tung » trong tung, tong ung, trong tuong
doc hieu » toc thieu, hoc thieu, hoc hien
tung dan » dung dan, huong dan, trung dai
phan cau » phan dau, phan cac, phan lap

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) or (trung tuan)) tong tung dan ((phan cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - thanh ((trung cua) OR (trung tuan)) tong tung dan ((phan cau) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh ((trung cua) or (trung tuan)) tong tung dan ((phan cau) or (phan tu))*.