Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, kieu tinh
thong cong » trong cong, tong cong, thong thong
chau tinh » cuu tinh, ha tinh, cua tinh
hanh dinh » thanh dinh, hinh dinh, anh dinh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
co thong » bo thong, co trong, co phong
cong san » cong tac
san tuan » van tuan, san luan, san quan
tuan cau » toan cau, quan cau, tuan cu

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

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