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