Perhaps you should try some spelling variations:
thanh trung » thanh tung
thong cong » trong cong, tong cong, thong thong
hiem ngan » kim ngan
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
cong ban » cong bang, cong san, cong tan
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac

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

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