Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, manh trung
hoc chieu » hoc thieu, ho chieu, hoc hien
cap nhung » cam nhung, vap nhung, canh nhung
dap nhung » vap nhung, va nhung, dap ung
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

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