Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu manh » chieu xanh, hieu nganh, dieu hanh
lieu tinh » trieu tinh, diep tinh, bien tinh
trung cua » truong cua, trung tuan, trung cap
cua tong » cua cong, cua dong, cua nong
cong ban » cong bang, cong san, cong dan
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu manh) or (lieu tinh)) - thanh trung cua tong ((cong ban) OR (cong tan)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (lieu tinh)) - thanh trung cua tong ((cong ban) OR (cong tan)) than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu manh) or (lieu tinh)) - thanh trung cua tong ((cong ban) OR (cong tan)) than cau".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (lieu tinh)) - thanh trung cua tong ((cong ban) OR (cong tan)) than cau*.