Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sang » chieu sach, chieu xanh, hieu lang
trung quan » truong quan, trong quan, trung tuan
quan trinh » qua trinh, quan tinh, xuan trinh
trinh cong » trinh dung
thang cau » hang cau, thanh chau, nhung cau
thong cau » thong cac, thong cap, thong tu
cong san » cong tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu tinh) or (chieu sang)) - thanh trung quan trinh cong san ((thang cau) OR (thong cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu tinh) OR (chieu sang)) - thanh trung quan trinh cong san ((thang cau) OR (thong cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu tinh) or (chieu sang)) - thanh trung quan trinh cong san ((thang cau) OR (thong cau))".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu tinh) or (chieu sang)) - thanh trung quan trinh cong san ((thang cau) OR (thong cau))*.