Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, kieu tinh
trung tham » trung tam, trung thanh, trung thang
tham thong » pham thuong, than thuong, thoai thong
thong cong » trong cong, tong cong, thong thong
chau tinh » cuu tinh, ha tinh, cua tinh
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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 sach) or (((chieu tinh) OR (chau tinh)))) - thanh trung tham thong cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (((chieu tinh) OR (chau tinh)))) - thanh trung tham thong cong tan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sach) or (((chieu tinh) OR (chau tinh)))) - thanh trung tham thong cong tan toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (((chieu tinh) OR (chau tinh)))) - thanh trung tham thong cong tan toan cau*.