Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
doi chiet » doi chieu, doi chi, doi viet
trinh cua » tinh cua, trinh luat, trinh quan
bang cong » dang cong, bang song, hang cong
tran tuan » tran xuan, tran quang, tran thanh
ban cong » van cong, phan cong, ban huong

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chiet tach - hanh trinh cua ((ban cong) OR (bang cong)) tan tran tuan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chiet tach - hanh trinh cua ((ban cong) OR (bang cong)) tan tran tuan".
• Adding a wildcard symbol may retrieve word variants: doi chiet tach - hanh trinh cua ((ban cong) OR (bang cong)) tan tran tuan*.