Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, manh trung
thong cong » trong cong, tong cong, thong thong
trung cap » truong cao, trung tam
cap thong » cap tong, chap thuong, phap thong
cong van » cong vang, cong san, song van
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((chieu sach) or (dieu hanh)) - hanh trung cap thong cong van ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((chieu sach) OR (dieu hanh)) - hanh trung cap thong cong van ((toan tap) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: toc ((chieu sach) or (dieu hanh)) - hanh trung cap thong cong van ((toan tap) or (toan ban))*.