Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thang long » thanh cong
hoc thieu » toc thieu, hoc hien
trinh han » trinh quan
han thang » van thang, han chang, nhanh thang
van thanh » ban thanh, van tuan
ho chieu » theo chieu, doi chieu, mot chieu

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) or (hoc thieu)) sach - hanh trinh han thang long ((xuan toan) or (van thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - hanh trinh han thang long ((xuan toan) OR (van thanh)) cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) sach - hanh trinh han thang long ((xuan toan) or (van thanh)) cau*.