Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trang » thanh trung, canh tranh, hanh trinh
cua thuong » cua truong, cua phuong, ca thuong
tran hoang » tran hong, quan hoang, tran quang
hoc chiet » hoc thiet, hoc nhiet, hoc hien
cua thong » cua khong, cua tong, suat thong
cong san » cong tac
tuan ban » tuan bang, toan ban, luan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chiet tach - hanh trang ((cua thong) OR (cua thuong)) cong san ((tuan ban) or (tran hoang))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - hanh trang ((cua thong) OR (cua thuong)) cong san ((tuan ban) OR (tran hoang)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chiet tach - hanh trang ((cua thong) OR (cua thuong)) cong san ((tuan ban) or (tran hoang))".
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - hanh trang ((cua thong) OR (cua thuong)) cong san ((tuan ban) or (tran hoang))*.