Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
hoc chieu » hoc thieu, ho chieu, hoc hien
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
cong tam » cong tac, cong tan, cong nam
tam toan » tap toan, tam than, pham 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 - hanh ((trung cua) or (trung cap)) thong cong tam toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((trung cua) OR (trung cap)) thong cong tam toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((trung cua) or (trung cap)) thong cong tam toan cau*.