Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
trung tuan » trung thanh, trung tam, truong thanh
tuan thanh » thuan thanh, quan thanh, tran thanh
tien manh » tien anh, tien thanh, tieng anh
tran tuan » tran xuan, tran quang, tran thanh
dang cong » dung cong
cong tuan » cong tan, cong luan, cong thanh
thanh chu » thanh chau, thanh cha, thanh thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((tien manh) or (thien danh)) - thanh ((trung tuan) OR (tran tuan)) dang cong tuan thanh chu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien manh) OR (thien danh)) - thanh ((trung tuan) OR (tran tuan)) dang cong tuan thanh chu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((tien manh) or (thien danh)) - thanh ((trung tuan) OR (tran tuan)) dang cong tuan thanh chu".
• Adding a wildcard symbol may retrieve word variants: hoc ((tien manh) or (thien danh)) - thanh ((trung tuan) OR (tran tuan)) dang cong tuan thanh chu*.