Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, truong thanh
tran tuan » tran xuan, tran quang, tran thanh
thanh cau » thanh chau, thanh mau, nhanh cau
chi xanh » chi anh, chi danh, chi hanh
cong tac » cong ty
cong tan » cong san, cong thanh, cong ty
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: doi chi xanh - hanh ((trung tuan) OR (tran tuan)) phong ((cong tac) or (cong tan)) thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - hanh ((trung tuan) OR (tran tuan)) phong ((cong tac) OR (cong tan)) thanh cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi xanh - hanh ((trung tuan) OR (tran tuan)) phong ((cong tac) or (cong tan)) thanh cau*".