Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
chieu sach » chinh sach, chiet tach, chieu sang
khong cong » thong cong, khong cang, chong cong
ho chieu » theo chieu, hoc thieu, doi chieu
tang cua » mang cua, hang cua, tang luan
cong san » cong tac
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: ho chieu sach - hanh ((tang cua) or (trung tuan)) khong cong san ((toan cau) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((tang cua) OR (trung tuan)) khong cong san ((toan cau) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((tang cua) or (trung tuan)) khong cong san ((toan cau) or (van ban))*.